Materiały źródłowe

• #1 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #2 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

• #3 Transient ischemic attack (TIA) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/transient-ischemic-attack/symptoms-causes/syc-20355679

  A transient ischemic attack (TIA) is caused by a brief blockage of blood flow to the brain. […] The cause of a transient ischemic attack is similar to the cause of an ischemic stroke, which is the most common type of stroke. In a TIA, unlike a stroke, the blockage is brief and there is no permanent damage. […] The blockage that occurs during a TIA often results from a buildup of cholesterol-containing fatty deposits called plaques in an artery. This is known as atherosclerosis. […] A blood clot that moves from another part of the body, such as the heart, to an artery that supplies the brain also may cause a TIA.

• #4 TIA (Transient Ischemic Attack): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14173-transient-ischemic-attack-tia-or-mini-stroke

  Transient ischemic attacks and ischemic strokes happen for the same reasons. Those reasons include: […] Formation of a clot in your brain (thrombosis). […] A fragment of a clot that formed elsewhere in your body that breaks free and travels through your blood vessels until it gets stuck in your brain (thromboembolism). […] Small vessel blockage (lacunar stroke). […] Cryptogenic TIA (the word cryptogenic means hidden origin, so these are TIAs that happen with an unknown cause). […] Many factors can contribute to a TIA or make one more likely to happen. Risk factors include: […] High blood pressure (hypertension). This is the most significant of all risk factors for TIA. Its one of the reasons why managing blood pressure is so essential. […] A history of stroke or TIA. Having a previous stroke or TIA raises the risk of having a TIA. […] The main reason that a TIA is a medical emergency is because its often a warning that a stroke is possible or even imminent. Up to 20% of people who have a TIA have a stroke within 90 days, and half of those strokes happen within the first two days after a TIA.

• #5 Transient ischemic attack (TIA) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/transient-ischemic-attack/symptoms-causes/syc-20355679

  A transient ischemic attack (TIA) is caused by a brief blockage of blood flow to the brain. […] The cause of a transient ischemic attack is similar to the cause of an ischemic stroke, which is the most common type of stroke. In a TIA, unlike a stroke, the blockage is brief and there is no permanent damage. […] The blockage that occurs during a TIA often results from a buildup of cholesterol-containing fatty deposits called plaques in an artery. This is known as atherosclerosis. […] A blood clot that moves from another part of the body, such as the heart, to an artery that supplies the brain also may cause a TIA.

• #6 Transient ischemic attack | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/transient-ischaemic-attack?lang=us

  Transient ischemic attacks (TIAs) describe a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] There are three pathophysiological mechanisms: […] low-flow transient ischemic attack: caused by large artery stenosis (e.g. internal carotid artery stenosis) […] embolic transient ischemic attack: caused by the same etiologies of thromboembolic ischemic stroke […] lacunar or small penetrating vessel transient ischemic attack: caused by either stenosis of intracranial arteries (e.g. middle cerebral artery stenosis) or lipohyalinosis of penetrating arteries. […] Management is complex, but in short, revolves around determining the etiology of the transient ischemic attack, risk stratification, and then medical (e.g. aspirin, statin) and/or surgical therapy (e.g. carotid endarterectomy) where appropriate.

• #7 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

• #8 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  Carotid stenosis secondary to atherosclerosis narrowing the diameter of the lumen and thus limiting blood flow is another common cause of TIA. […] Risk factors associated with TIA are categorized as modifiable or non-modifiable. […] The modifiable risk factors are commonly targeted in treatment options to attempt to minimize risk of TIA and stroke. […] There are three major mechanisms of ischemia in the brain: embolism traveling to the brain, in situ thrombotic occlusion in the intracranial vessels supplying the parenchyma of the brain, and stenosis of vessels leading to poor perfusion secondary to flow-limiting diameter.

• #9 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  Carotid stenosis secondary to atherosclerosis narrowing the diameter of the lumen and thus limiting blood flow is another common cause of TIA. […] Risk factors associated with TIA are categorized as modifiable or non-modifiable. […] The modifiable risk factors are commonly targeted in treatment options to attempt to minimize risk of TIA and stroke. […] There are three major mechanisms of ischemia in the brain: embolism traveling to the brain, in situ thrombotic occlusion in the intracranial vessels supplying the parenchyma of the brain, and stenosis of vessels leading to poor perfusion secondary to flow-limiting diameter.

• #10 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  Carotid stenosis secondary to atherosclerosis narrowing the diameter of the lumen and thus limiting blood flow is another common cause of TIA. […] Risk factors associated with TIA are categorized as modifiable or non-modifiable. […] The modifiable risk factors are commonly targeted in treatment options to attempt to minimize risk of TIA and stroke. […] There are three major mechanisms of ischemia in the brain: embolism traveling to the brain, in situ thrombotic occlusion in the intracranial vessels supplying the parenchyma of the brain, and stenosis of vessels leading to poor perfusion secondary to flow-limiting diameter.

• #11 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #12 Transient ischemic attack (TIA) | STROKE MANUAL

  https://www.stroke-manual.com/transient-ischemic-attack-tia/

  Transient ischemic attack (TIA) subtypes, classified according to pathophysiological mechanisms, are similar to subtypes of ischemic stroke. […] The TOAST and Chinese classifications provide a framework for identifying the underlying mechanism of TIA, which is critical for tailoring interventions. […] Vascular risk factors are shared between TIA and stroke, as both conditions arise from similar underlying vascular pathologies (e.g., diabetes, hypertension, age, smoking, an unhealthy diet and obesity, alcoholism, stress, and physical inactivity).

• #13 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  A transient ischemic attack (TIA) is focal brain ischemia that causes sudden, transient neurologic deficits and is not accompanied by permanent brain infarction (eg, negative results on diffusion-weighted MRI). […] Risk factors for TIA are the same as those for ischemic stroke. […] Most TIAs are caused by emboli, usually from carotid or vertebral arteries, although most of the causes of ischemic stroke can also result in TIAs. […] Uncommonly, TIAs result from impaired perfusion due to severe hypoxemia, reduced oxygen-carrying capacity of blood (eg, profound anemia, carbon monoxide poisoning), or increased blood viscosity (eg, severe polycythemia), particularly in brain arteries with preexisting stenosis. […] In subclavian steal syndrome, a subclavian artery stenosed proximal to the origin of the vertebral artery steals blood from the vertebral artery (in which blood flow reverses) to supply the arm during exertion, causing signs of vertebrobasilar ischemia.

• #14 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #15

  https://consensus.app/questions/tia-causes/

  Metabolic syndrome contributes to systemic inflammation, which activates the coagulation system and may lead to the formation of pathological thrombi, further increasing the risk of TIA. This highlights the importance of managing metabolic syndrome to prevent the onset of atherosclerosis and subsequent TIAs. […] Cardiac pathology, including conditions such as atrial fibrillation and other heart diseases, is another significant cause of TIA. These conditions can lead to the formation of blood clots in the heart, which may travel to the brain and cause a TIA. Studies have shown that patients with cardiac findings have a higher risk of major vascular events, including TIA. […] Small vessel disease (SVD) involves the narrowing or blockage of the small arteries in the brain. It is a common cause of TIA, particularly in patients with a history of hypertension and diabetes. SVD can lead to lacunar strokes, which are small, deep strokes in the brain that can present as TIAs.

• #16 TIA (Transient Ischemic Attack): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14173-transient-ischemic-attack-tia-or-mini-stroke

  Transient ischemic attacks and ischemic strokes happen for the same reasons. Those reasons include: […] Formation of a clot in your brain (thrombosis). […] A fragment of a clot that formed elsewhere in your body that breaks free and travels through your blood vessels until it gets stuck in your brain (thromboembolism). […] Small vessel blockage (lacunar stroke). […] Cryptogenic TIA (the word cryptogenic means hidden origin, so these are TIAs that happen with an unknown cause). […] Many factors can contribute to a TIA or make one more likely to happen. Risk factors include: […] High blood pressure (hypertension). This is the most significant of all risk factors for TIA. Its one of the reasons why managing blood pressure is so essential. […] A history of stroke or TIA. Having a previous stroke or TIA raises the risk of having a TIA. […] The main reason that a TIA is a medical emergency is because its often a warning that a stroke is possible or even imminent. Up to 20% of people who have a TIA have a stroke within 90 days, and half of those strokes happen within the first two days after a TIA.

• #17 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #18 Transient ischemic attack | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/transient-ischaemic-attack?lang=us

  Transient ischemic attacks (TIAs) describe a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] There are three pathophysiological mechanisms: […] low-flow transient ischemic attack: caused by large artery stenosis (e.g. internal carotid artery stenosis) […] embolic transient ischemic attack: caused by the same etiologies of thromboembolic ischemic stroke […] lacunar or small penetrating vessel transient ischemic attack: caused by either stenosis of intracranial arteries (e.g. middle cerebral artery stenosis) or lipohyalinosis of penetrating arteries. […] Management is complex, but in short, revolves around determining the etiology of the transient ischemic attack, risk stratification, and then medical (e.g. aspirin, statin) and/or surgical therapy (e.g. carotid endarterectomy) where appropriate.

• #19 Transient ischemic attack (TIA): Symptoms, causes, and treatment

  https://www.medicalnewstoday.com/articles/164038

  A transient ischemic attack (TIA) occurs when there is a disruption in the supply of oxygen to the brain. This may be due to: […] TIAs occur when a blood clot blocks blood flow and prevents oxygen from reaching the brain cells for a short while. […] A TIA causes similar symptoms to those of a stroke, but it is temporary. […] The same factors that lead to the temporary insufficiency of blood flow in a TIA can cause a stroke due to longer lasting blood flow reduction, which can lead to permanent brain damage. […] A TIA occurs when there is a disruption in the supply of oxygen to the brain. This may be due to: atherosclerosis, in which fatty deposits cause the arteries to become harder, thicker, narrower, and less flexible; blood clots due to heart disease, cardiovascular disease, or an irregular heart rhythm; blood clots due to a blood condition, such as sickle cell disease; an embolism or blood clot that has traveled from elsewhere in the body; an air bubble in the bloodstream.

• #20 Transient ischemic attack (TIA) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/transient-ischemic-attack/symptoms-causes/syc-20355679

  A transient ischemic attack (TIA) is caused by a brief blockage of blood flow to the brain. […] The cause of a transient ischemic attack is similar to the cause of an ischemic stroke, which is the most common type of stroke. In a TIA, unlike a stroke, the blockage is brief and there is no permanent damage. […] The blockage that occurs during a TIA often results from a buildup of cholesterol-containing fatty deposits called plaques in an artery. This is known as atherosclerosis. […] A blood clot that moves from another part of the body, such as the heart, to an artery that supplies the brain also may cause a TIA.

• #21 Transient ischemic attack (TIA) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/transient-ischemic-attack/symptoms-causes/syc-20355679

  A transient ischemic attack (TIA) is caused by a brief blockage of blood flow to the brain. […] The cause of a transient ischemic attack is similar to the cause of an ischemic stroke, which is the most common type of stroke. In a TIA, unlike a stroke, the blockage is brief and there is no permanent damage. […] The blockage that occurs during a TIA often results from a buildup of cholesterol-containing fatty deposits called plaques in an artery. This is known as atherosclerosis. […] A blood clot that moves from another part of the body, such as the heart, to an artery that supplies the brain also may cause a TIA.

• #22 Transient Ischaemic Attack (TIA): Symptoms and Treatment

  https://patient.info/brain-nerves/stroke-leaflet/transient-ischaemic-attack

  A transient ischaemic attack (TIA) causes symptoms similar to a stroke. […] The most common cause is a tiny blood clot in a blood vessel in the brain. […] In most cases, a TIA is caused by a tiny blood clot that becomes stuck in a small blood vessel (artery) in the brain. This blocks the blood flow, and a part of the brain is starved of oxygen. […] The blood clot usually starts elsewhere in the body, travelling through blood vessels until it reaches an artery in the brain and gets stuck. The two most common causes of this are: Atrial fibrillation, a heart condition. This can cause blood clots to form in the heart, which can then travel through blood vessels to reach other parts of the body, including the brain. […] Atherosclerosis (thickening and hardening) and stenosis (narrowing) of the arteries in the neck that supply blood to the brain. Areas of thickening inside the arteries, called plaques, can sometimes burst, causing a blood clot to form. This blood clot, or part of it, can then travel up to the brain.

• #23 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  A transient ischemic attack (TIA), commonly known as a mini-stroke, is a temporary (transient) stroke with noticeable symptoms that end within 24 hours. […] A TIA is caused by a temporary disruption in blood flow to the brain, or cerebral blood flow (CBF). […] The most common underlying pathology leading to TIA and stroke is a cardiac condition called atrial fibrillation, where poor coordination of heart contraction may lead to a formation of a clot in the atrial chamber that can become dislodged and travel to a cerebral artery. […] Another common culprit of TIA is an atherosclerotic plaque located in the common carotid artery, typically by the bifurcation between the internal and external carotids, that becomes an embolism to the brain vasculature similar to the clot in the prior example.

• #24 Transient Ischemic Attack (TIA): Mini Stroke Symptoms, Causes

  https://www.medicinenet.com/transient_ischemic_attack_tia_mini-stroke/article.htm

  Transient ischemic attack (TIA) is a brief interruption of blood flow to part of the brain that causes temporary stroke-like symptoms. […] Loss of blood supply to portions of the brain may occur for a variety of reasons. A blood vessel can become blocked, and blood supply to a part of the brain is lost, or a blood vessel can leak blood into the brain (brain hemorrhage). Most commonly, however, the blood vessel is blocked. The blockage can be caused by a blood clot that forms in the blood vessel (thrombosis) or it can be caused by a clot or debris that floats downstream (embolus). […] Fatty plaque formation in the blood vessel wall is called atherosclerosis or „hardening of the arteries.” Plaque can rupture and cause a small blood clot to form and occlude the blood vessel. Blockage can also occur when debris from the narrowing of a carotid artery breaks off and floats downstream to cause the occlusion.

• #25 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  A transient ischemic attack (TIA), commonly known as a mini-stroke, is a temporary (transient) stroke with noticeable symptoms that end within 24 hours. […] A TIA is caused by a temporary disruption in blood flow to the brain, or cerebral blood flow (CBF). […] The most common underlying pathology leading to TIA and stroke is a cardiac condition called atrial fibrillation, where poor coordination of heart contraction may lead to a formation of a clot in the atrial chamber that can become dislodged and travel to a cerebral artery. […] Another common culprit of TIA is an atherosclerotic plaque located in the common carotid artery, typically by the bifurcation between the internal and external carotids, that becomes an embolism to the brain vasculature similar to the clot in the prior example.

• #26 Transient Ischaemic Attack (TIA): Symptoms and Treatment

  https://patient.info/brain-nerves/stroke-leaflet/transient-ischaemic-attack

  A transient ischaemic attack (TIA) causes symptoms similar to a stroke. […] The most common cause is a tiny blood clot in a blood vessel in the brain. […] In most cases, a TIA is caused by a tiny blood clot that becomes stuck in a small blood vessel (artery) in the brain. This blocks the blood flow, and a part of the brain is starved of oxygen. […] The blood clot usually starts elsewhere in the body, travelling through blood vessels until it reaches an artery in the brain and gets stuck. The two most common causes of this are: Atrial fibrillation, a heart condition. This can cause blood clots to form in the heart, which can then travel through blood vessels to reach other parts of the body, including the brain. […] Atherosclerosis (thickening and hardening) and stenosis (narrowing) of the arteries in the neck that supply blood to the brain. Areas of thickening inside the arteries, called plaques, can sometimes burst, causing a blood clot to form. This blood clot, or part of it, can then travel up to the brain.

• #27 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #28 Transient ischemic attack – Wikipedia

  https://en.wikipedia.org/wiki/Transient_ischemic_attack

  A transient ischemic attack (TIA), commonly known as a mini-stroke, is a temporary (transient) stroke with noticeable symptoms that end within 24 hours. […] A TIA is caused by a temporary disruption in blood flow to the brain, or cerebral blood flow (CBF). […] The most common underlying pathology leading to TIA and stroke is a cardiac condition called atrial fibrillation, where poor coordination of heart contraction may lead to a formation of a clot in the atrial chamber that can become dislodged and travel to a cerebral artery. […] Another common culprit of TIA is an atherosclerotic plaque located in the common carotid artery, typically by the bifurcation between the internal and external carotids, that becomes an embolism to the brain vasculature similar to the clot in the prior example.

• #29 Transient ischaemic attack (TIA) | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/brain-nerves-and-spinal-cord/transient-ischaemic-attack-tia/

  A transient ischaemic attack (TIA), or mini stroke, happens when theres a temporary disruption in the blood supply to part of the brain. […] TIAs happen when there is a temporary disruption in the blood supply to part of the brain. […] The blockage responsible for most TIAs is usually caused by a blood clot that has travelled to the blood vessels supplying the brain. […] A type of irregular heartbeat called atrial fibrillation can also cause TIAs. It can create blood clots that escape from the heart and become stuck in the blood vessels that supply the brain.

• #30 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #31 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #32 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #33 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #34 Patient education: Transient ischemic attack (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/transient-ischemic-attack-beyond-the-basics/print

  In some cases, TIAs can be caused by blood clots that form in the heart and travel to the brain. TIAs can also occur due to narrowing and closing small blood vessels deep inside the brain. These vessels are frequently damaged by high blood pressure or diabetes if left untreated throughout a person’s lifetime. […] Several factors can increase a person’s risk of TIA, including the following: Age greater than 40 years, Heart and blood vessel disease (eg, atrial fibrillation, carotid stenosis), High blood pressure, Smoking, Diabetes, High blood cholesterol levels, Illegal drug use or heavy alcohol use, Recent childbirth, Previous history of transient ischemic attack or stroke, Sedentary lifestyle and lack of exercise, Obesity, Current or past history of blood clots. […] The risk of stroke after a TIA is highest in the first few hours to days after the TIA. For example, the risk of having a stroke in the first two days after TIA has been estimated to be 4 to 10 percent. People with certain characteristics are thought to have a higher risk (ie, closer to 10 percent) of stroke compared with people without these characteristics. […] Sometimes, what was thought to be a TIA was actually a minor stroke with symptoms that resolved. If a CT or MRI scan shows evidence of new ischemic injury in the brain, this confirms that the person had a minor stroke and not a TIA.

• #35

  https://consensus.app/questions/tia-causes/

  Metabolic syndrome contributes to systemic inflammation, which activates the coagulation system and may lead to the formation of pathological thrombi, further increasing the risk of TIA. This highlights the importance of managing metabolic syndrome to prevent the onset of atherosclerosis and subsequent TIAs. […] Cardiac pathology, including conditions such as atrial fibrillation and other heart diseases, is another significant cause of TIA. These conditions can lead to the formation of blood clots in the heart, which may travel to the brain and cause a TIA. Studies have shown that patients with cardiac findings have a higher risk of major vascular events, including TIA. […] Small vessel disease (SVD) involves the narrowing or blockage of the small arteries in the brain. It is a common cause of TIA, particularly in patients with a history of hypertension and diabetes. SVD can lead to lacunar strokes, which are small, deep strokes in the brain that can present as TIAs.

• #36 Transient ischemic attack | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/transient-ischaemic-attack?lang=us

  Transient ischemic attacks (TIAs) describe a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] There are three pathophysiological mechanisms: […] low-flow transient ischemic attack: caused by large artery stenosis (e.g. internal carotid artery stenosis) […] embolic transient ischemic attack: caused by the same etiologies of thromboembolic ischemic stroke […] lacunar or small penetrating vessel transient ischemic attack: caused by either stenosis of intracranial arteries (e.g. middle cerebral artery stenosis) or lipohyalinosis of penetrating arteries. […] Management is complex, but in short, revolves around determining the etiology of the transient ischemic attack, risk stratification, and then medical (e.g. aspirin, statin) and/or surgical therapy (e.g. carotid endarterectomy) where appropriate.

• #37 Transient ischemic attack | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/transient-ischaemic-attack?lang=us

  Transient ischemic attacks (TIAs) describe a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] There are three pathophysiological mechanisms: […] low-flow transient ischemic attack: caused by large artery stenosis (e.g. internal carotid artery stenosis) […] embolic transient ischemic attack: caused by the same etiologies of thromboembolic ischemic stroke […] lacunar or small penetrating vessel transient ischemic attack: caused by either stenosis of intracranial arteries (e.g. middle cerebral artery stenosis) or lipohyalinosis of penetrating arteries. […] Management is complex, but in short, revolves around determining the etiology of the transient ischemic attack, risk stratification, and then medical (e.g. aspirin, statin) and/or surgical therapy (e.g. carotid endarterectomy) where appropriate.

• #38 Transient Ischemic Attacks

  https://www.umassmed.edu/strokestop/modules/module-1-stroketia/transient-ischemic-attacks-tias/transient-ischemic-attacks/

  A transient ischemic attack or TIA is most usually a brief spell of numbness, weakness, or blindness that lasts less than 10 minutes. […] A TIA is an important indicator that the stage is set for an ischemic stroke, because it demonstrates that enough vascular and/or cardiac pathology is present to produce neurologic symptoms. […] TIAs are produced by transient blockage of the cerebral or retinal circulation. […] Embolization of thrombi formed on plaques in the extracranial portions of the carotid and vertebral arteries or of thrombi formed in the diseased heart are two important causes. […] A series of repeated TIAs characterized by identical neurological deficits is often a warning sign that a major vessel contains an unstable plaque on which thrombi are repeatedly forming (and causing ischemia) and then fragmenting (and allowing blood to flow again). […] In some individuals, TIAs may result from decreased perfusion of large arteries that are already partially occluded by plaque.

• #39 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

• #40

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw226606

  A transient ischemic attack (TIA) is an event that happens when blood flow to part of the brain is blocked or reduced, often by a blood clot. […] A TIA occurs when the blood supply to part of the brain is blocked for a short time. This may be caused by a blood clot. A clot may form in damaged blood vessels. A blood clot can also travel to the brain from another location, like the heart. […] A TIA occurs when the blood supply to part of the brain is reduced or blocked for a short time. This may be caused by a blood clot in a blood vessel. A clot may form in blood vessels that have a buildup of a substance called plaque. This buildup is called hardening of the arteries or atherosclerosis. A blood clot can also travel to the brain from another location, such as the heart or blood vessels in the neck. […] Sometimes a TIA is caused by a sharp drop in blood pressure that reduces blood flow to the brain. This is called a „low-flow” TIA. It is not as common as other types.

• #41 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  A transient ischemic attack (TIA) is focal brain ischemia that causes sudden, transient neurologic deficits and is not accompanied by permanent brain infarction (eg, negative results on diffusion-weighted MRI). […] Risk factors for TIA are the same as those for ischemic stroke. […] Most TIAs are caused by emboli, usually from carotid or vertebral arteries, although most of the causes of ischemic stroke can also result in TIAs. […] Uncommonly, TIAs result from impaired perfusion due to severe hypoxemia, reduced oxygen-carrying capacity of blood (eg, profound anemia, carbon monoxide poisoning), or increased blood viscosity (eg, severe polycythemia), particularly in brain arteries with preexisting stenosis. […] In subclavian steal syndrome, a subclavian artery stenosed proximal to the origin of the vertebral artery steals blood from the vertebral artery (in which blood flow reverses) to supply the arm during exertion, causing signs of vertebrobasilar ischemia.

• #42 Transient Ischemic Attack (TIA) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/t/transient-ischemic-attack-tia.html

  A transient ischemic attack (TIA) is a brief episode during which parts of the brain do not receive enough blood. […] TIAs may be caused by a variety of factors, including: Narrowing of the arteries, usually caused by atherosclerosis. This is when fatty material builds up and hardens on an artery wall. This material can break off and get lodged in smaller blood vessels in the brain. […] High blood pressure […] A lack of oxygen in the blood flowing to the brain, which can occur when a person is severely anemic, has carbon monoxide poisoning or has leukemia or polycythemia, a condition that produces abnormal blood cells and clotting.

• #43 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  A transient ischemic attack (TIA) is focal brain ischemia that causes sudden, transient neurologic deficits and is not accompanied by permanent brain infarction (eg, negative results on diffusion-weighted MRI). […] Risk factors for TIA are the same as those for ischemic stroke. […] Most TIAs are caused by emboli, usually from carotid or vertebral arteries, although most of the causes of ischemic stroke can also result in TIAs. […] Uncommonly, TIAs result from impaired perfusion due to severe hypoxemia, reduced oxygen-carrying capacity of blood (eg, profound anemia, carbon monoxide poisoning), or increased blood viscosity (eg, severe polycythemia), particularly in brain arteries with preexisting stenosis. […] In subclavian steal syndrome, a subclavian artery stenosed proximal to the origin of the vertebral artery steals blood from the vertebral artery (in which blood flow reverses) to supply the arm during exertion, causing signs of vertebrobasilar ischemia.

• #44 Transient Ischemic Attack (TIA) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/t/transient-ischemic-attack-tia.html

  A transient ischemic attack (TIA) is a brief episode during which parts of the brain do not receive enough blood. […] TIAs may be caused by a variety of factors, including: Narrowing of the arteries, usually caused by atherosclerosis. This is when fatty material builds up and hardens on an artery wall. This material can break off and get lodged in smaller blood vessels in the brain. […] High blood pressure […] A lack of oxygen in the blood flowing to the brain, which can occur when a person is severely anemic, has carbon monoxide poisoning or has leukemia or polycythemia, a condition that produces abnormal blood cells and clotting.

• #45 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  A transient ischemic attack (TIA) is focal brain ischemia that causes sudden, transient neurologic deficits and is not accompanied by permanent brain infarction (eg, negative results on diffusion-weighted MRI). […] Risk factors for TIA are the same as those for ischemic stroke. […] Most TIAs are caused by emboli, usually from carotid or vertebral arteries, although most of the causes of ischemic stroke can also result in TIAs. […] Uncommonly, TIAs result from impaired perfusion due to severe hypoxemia, reduced oxygen-carrying capacity of blood (eg, profound anemia, carbon monoxide poisoning), or increased blood viscosity (eg, severe polycythemia), particularly in brain arteries with preexisting stenosis. […] In subclavian steal syndrome, a subclavian artery stenosed proximal to the origin of the vertebral artery steals blood from the vertebral artery (in which blood flow reverses) to supply the arm during exertion, causing signs of vertebrobasilar ischemia.

• #46 Transient Ischemic Attack (TIA) » Department of Neurology » College of Medicine » University of Florida

  https://neurology.ufl.edu/patient-care/strokepatients/additional-information/transient-ischemic-attack-tia/

  Transient ischemic attacks are caused when blood flow to parts of the brain are restricted for brief periods of time. […] Transient ischemic attacks can be caused by a variety of factors, including: […] Small pieces of fatty material or calcium that have built up on an artery wall and then break off and lodge in the small blood vessels of the brain […] Spasms in the walls of the arteries […] High blood pressure […] Conditions in which the blood flows but does not have enough oxygen to nourish the brain. This can happen when a person is severely anemic, has carbon monoxide poisoning or has a condition that produces abnormal blood cells or clotting function, such as leukemia or polycythemia.

• #47 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #48 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #49 Transient ischemic attack: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000730.htm

  A transient ischemic attack (TIA) occurs when blood flow to a part of the brain stops for a brief time. A transient ischemic attack is a warning sign that a true stroke may happen in the future (often near future) if something is not done to prevent it. […] The loss of blood flow to an area of the brain can be caused by: A blood clot in an artery of the brain, A blood clot that travels to the brain from somewhere else in the body (for example, from the heart), An injury to blood vessels, Narrowing of a blood vessel in the brain or leading to the brain. […] High blood pressure is the main risk factor for TIAs and stroke. Other major risk factors are: Irregular heartbeat called atrial fibrillation, Diabetes, Family history of stroke, Being male, High cholesterol, Tendency to have abnormal blood clotting, Increasing age, especially after age 55, Ethnicity (African Americans are more likely to die of stroke), Smoking, Alcohol use, Recreational drug use, History of prior TIA or stroke. […] People who have heart disease or poor blood flow in their legs caused by narrowed arteries are also more likely to have a TIA or stroke.

• #50 Related conditions – Transient Ischemic Attack – Causes, Symptoms, Treatment, Diagnosis – MedBroadcast.com

  https://medbroadcast.com/channel/diabetes/related-conditions/transient-ischemic-attack

  Smoking is the number two risk factor in most strokes. […] Heart disease and arrhythmias are often due to risk factors, but some are congenital (present from birth). […] Heavy alcohol use is a modifiable risk factor. […] Diabetes increases the risk of cardiovascular (heart- and blood vessel-related) and cerebrovascular (brain-related) events controlling blood sugar levels may also reduce the risk. […] High cholesterol is also a risk factor. […] Lifestyle risk factors include obesity, lack of exercise, high-risk diet (e.g., saturated fats or trans fats), and illegal drug use (e.g., cocaine, amphetamines). […] Coagulation disorders can lead to blood clots that block the vessels in the brain, causing a TIA or stroke. […] There are other risk factors that aren’t preventable, such as aging, family history, gender, and having had a previous stroke.

• #51 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #52 Related conditions – Transient Ischemic Attack – Causes, Symptoms, Treatment, Diagnosis – MedBroadcast.com

  https://medbroadcast.com/channel/diabetes/related-conditions/transient-ischemic-attack

  Smoking is the number two risk factor in most strokes. […] Heart disease and arrhythmias are often due to risk factors, but some are congenital (present from birth). […] Heavy alcohol use is a modifiable risk factor. […] Diabetes increases the risk of cardiovascular (heart- and blood vessel-related) and cerebrovascular (brain-related) events controlling blood sugar levels may also reduce the risk. […] High cholesterol is also a risk factor. […] Lifestyle risk factors include obesity, lack of exercise, high-risk diet (e.g., saturated fats or trans fats), and illegal drug use (e.g., cocaine, amphetamines). […] Coagulation disorders can lead to blood clots that block the vessels in the brain, causing a TIA or stroke. […] There are other risk factors that aren’t preventable, such as aging, family history, gender, and having had a previous stroke.

• #53 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #54 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #55 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #56 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #57 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #58 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #59 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #60 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #61 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #62 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #63 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #64 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #65 TIA (Transient Ischemic Attack): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14173-transient-ischemic-attack-tia-or-mini-stroke

  Transient ischemic attacks and ischemic strokes happen for the same reasons. Those reasons include: […] Formation of a clot in your brain (thrombosis). […] A fragment of a clot that formed elsewhere in your body that breaks free and travels through your blood vessels until it gets stuck in your brain (thromboembolism). […] Small vessel blockage (lacunar stroke). […] Cryptogenic TIA (the word cryptogenic means hidden origin, so these are TIAs that happen with an unknown cause). […] Many factors can contribute to a TIA or make one more likely to happen. Risk factors include: […] High blood pressure (hypertension). This is the most significant of all risk factors for TIA. Its one of the reasons why managing blood pressure is so essential. […] A history of stroke or TIA. Having a previous stroke or TIA raises the risk of having a TIA. […] The main reason that a TIA is a medical emergency is because its often a warning that a stroke is possible or even imminent. Up to 20% of people who have a TIA have a stroke within 90 days, and half of those strokes happen within the first two days after a TIA.

• #66 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #67 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #68 Transient ischemic attack: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000730.htm

  A transient ischemic attack (TIA) occurs when blood flow to a part of the brain stops for a brief time. A transient ischemic attack is a warning sign that a true stroke may happen in the future (often near future) if something is not done to prevent it. […] The loss of blood flow to an area of the brain can be caused by: A blood clot in an artery of the brain, A blood clot that travels to the brain from somewhere else in the body (for example, from the heart), An injury to blood vessels, Narrowing of a blood vessel in the brain or leading to the brain. […] High blood pressure is the main risk factor for TIAs and stroke. Other major risk factors are: Irregular heartbeat called atrial fibrillation, Diabetes, Family history of stroke, Being male, High cholesterol, Tendency to have abnormal blood clotting, Increasing age, especially after age 55, Ethnicity (African Americans are more likely to die of stroke), Smoking, Alcohol use, Recreational drug use, History of prior TIA or stroke. […] People who have heart disease or poor blood flow in their legs caused by narrowed arteries are also more likely to have a TIA or stroke.

• #69 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #70 Transient Ischemic Attack (TIA) – Neurologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/neurologic-disorders/stroke/transient-ischemic-attack-tia

  Modifiable risk factors include the following: Hypertension, Cigarette smoking, Dyslipidemia, Diabetes, Insulin resistance, Abdominal obesity, Obstructive sleep apnea, Excess alcohol consumption, Lack of physical activity, High-risk diet (eg, high in saturated fats, trans fats, and calories), Psychosocial stress (eg, depression), Heart disorders (particularly disorders that predispose to emboli, such as acute myocardial infarction, infective endocarditis, and atrial fibrillation), Carotid artery stenosis, Use of certain drugs (eg, cocaine, amphetamines), Hypercoagulability, Vasculitis, Exogenous estrogen. […] Unmodifiable risk factors include the following: Prior stroke, Older age, Family history of stroke, Male sex.

• #71

  https://www.nhs.uk/conditions/transient-ischaemic-attack-tia/

  A transient ischaemic attack (TIA) or „mini stroke” is caused by a temporary disruption in the blood supply to part of the brain. […] This blockage is usually caused by a blood clot that’s formed elsewhere in your body and travelled to the blood vessels supplying the brain, although it can also be caused by pieces of fatty material or air bubbles. […] Certain things can increase your chances of having a TIA, including: smoking, high blood pressure (hypertension), obesity, high cholesterol levels, regularly drinking an excessive amount of alcohol, having a type of irregular heartbeat called atrial fibrillation, having diabetes. […] People over 55 years of age and people of Asian, African or Caribbean descent are also at a higher risk of having a TIA.

• #72

  https://www2.hse.ie/conditions/transient-ischaemic-attack-tia/

  A transient ischaemic attack (TIA) is also known as a 'mini stroke’. It’s caused by blood temporarily not being able to get to part of the brain. This results in a lack of oxygen to the brain. […] During a TIA, one of the blood vessels that supply your brain with oxygen-rich blood becomes blocked. This blockage is usually caused by a blood clot that travels to the blood vessels supplying the brain. The blockage can also be caused by pieces of fatty material or air bubbles. […] Things that increase your chances of having a TIA include: smoking, high blood pressure (hypertension), obesity, high cholesterol, regularly drinking too much alcohol, a type of irregular heartbeat called atrial fibrillation, diabetes, disease of the carotid artery or a recent neck injury. People over age 55 and people of Asian, African or Caribbean descent are also at a higher risk of having a TIA.

• #73 Transient ischemic attack: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000730.htm

  A transient ischemic attack (TIA) occurs when blood flow to a part of the brain stops for a brief time. A transient ischemic attack is a warning sign that a true stroke may happen in the future (often near future) if something is not done to prevent it. […] The loss of blood flow to an area of the brain can be caused by: A blood clot in an artery of the brain, A blood clot that travels to the brain from somewhere else in the body (for example, from the heart), An injury to blood vessels, Narrowing of a blood vessel in the brain or leading to the brain. […] High blood pressure is the main risk factor for TIAs and stroke. Other major risk factors are: Irregular heartbeat called atrial fibrillation, Diabetes, Family history of stroke, Being male, High cholesterol, Tendency to have abnormal blood clotting, Increasing age, especially after age 55, Ethnicity (African Americans are more likely to die of stroke), Smoking, Alcohol use, Recreational drug use, History of prior TIA or stroke. […] People who have heart disease or poor blood flow in their legs caused by narrowed arteries are also more likely to have a TIA or stroke.

• #74 Transient Ischaemic Attack (TIA): Symptoms and Treatment

  https://patient.info/brain-nerves/stroke-leaflet/transient-ischaemic-attack

  There are other rarer causes of a TIA. These include: Blood clotting problems. […] Tiny bleeds into the brain. […] Blood disorders such as polycythaemia and sickle cell anaemia where the blood is very thick. […] Spasm of a small artery in the brain. […] A blood clot from the veins of the leg (a deep vein thrombosis) that travels through a hole in the heart to reach the arteries that supply the brain. […] Other uncommon problems of the brain or its blood vessels.

• #75 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #76 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #77 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  A transient ischemic attack (TIA) is a transient episode of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The TIA workup should focus on emergency/urgent risk stratification and management. Numerous potential underlying causes can be readily identified, including the following: Atherosclerosis of extracranial carotid and vertebral or intracranial arteries, Embolic sources – Valvular disease, ventricular thrombus, or thrombus formation from atrial fibrillation, aortic arch disease, paradoxical embolism via a patent foramen ovale (PFO) or atrial-septal defect (ASD), Arterial dissection, Arteritis – Inflammation of the arteries occurring primarily in elderly persons, especially women; noninfectious necrotizing vasculitis (primary cause); drugs; irradiation; local trauma; connective tissue diseases, Sympathomimetic drugs (eg, cocaine), Mass lesions (eg, tumors or subdural hematomas) These less frequently cause transient symptoms and more often result in progressive persistent symptoms, Hypercoagulable states (eg, genetic or associated with cancer or infection).

• #78 Transient Ischemic Attack (TIA) » Department of Neurology » College of Medicine » University of Florida

  https://neurology.ufl.edu/patient-care/strokepatients/additional-information/transient-ischemic-attack-tia/

  Transient ischemic attacks are caused when blood flow to parts of the brain are restricted for brief periods of time. […] Transient ischemic attacks can be caused by a variety of factors, including: […] Small pieces of fatty material or calcium that have built up on an artery wall and then break off and lodge in the small blood vessels of the brain […] Spasms in the walls of the arteries […] High blood pressure […] Conditions in which the blood flows but does not have enough oxygen to nourish the brain. This can happen when a person is severely anemic, has carbon monoxide poisoning or has a condition that produces abnormal blood cells or clotting function, such as leukemia or polycythemia.

• #79 What Is A Transient Ischemic Attack? | Brown University Health

  https://www.brownhealth.org/centers-services/comprehensive-stroke-center-rhode-island-hospital/transient-ischemic-attack

  Transient ischemic attacks (TIA) are caused by an interruption in the flow of blood to the brain. The three causes of attacks are: […] Low blood flow at a narrowing of a major artery that transports blood back to the brain, such as the carotid artery. […] A blood clot that occurs in another part of the body and breaks off, traveling to the brain and blocking a blood vessel in the brain. […] Narrowing of a smaller blood vessel in the brain due to plaque build-up, causing short-term blockage of blood flow. […] In extremely rare instances, a TIA may be caused by a small amount of bleeding within the brain, known as a hemorrhage.

• #80 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

• #81 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #82 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #83 Transient Ischaemic Attack (TIA): Symptoms and Treatment

  https://patient.info/brain-nerves/stroke-leaflet/transient-ischaemic-attack

  There are other rarer causes of a TIA. These include: Blood clotting problems. […] Tiny bleeds into the brain. […] Blood disorders such as polycythaemia and sickle cell anaemia where the blood is very thick. […] Spasm of a small artery in the brain. […] A blood clot from the veins of the leg (a deep vein thrombosis) that travels through a hole in the heart to reach the arteries that supply the brain. […] Other uncommon problems of the brain or its blood vessels.

• #84 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #85 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #86 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #87 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #88 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #89 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #90 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #91 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #92 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #93 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #94 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #95 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #96 Transient Ischemic Attack: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1910519-overview

  TIA etiologies in children, which can differ from those in adults, include the following: Congenital heart disease with cerebral thromboembolism (most common), Drug abuse (eg, cocaine), Clotting disorders, Central nervous system infection, Neurofibromatosis, Vasculitis, Idiopathic progressive arteriopathy of childhood (moyamoya), Fibromuscular dysplasia, Marfan disease, Tuberous sclerosis, Tumor, Sickle cell disease, Focal arteriopathies.

• #97 Transient Ischemic Attack | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/transient-ischemic-attack

  Transient ischemic attacks (TIAs) are temporary deficits in neurologic function caused by a brief interruption of blood flow to part of the brain. […] TIAs occur when blood flow to a portion or region of the brain is interrupted, typically by a blood clot. Certain conditions are associated with an increased risk of having a TIA, including: Cerebral arteriopathies, such as moyamoya disease, Sickle cell disease, Congenital heart disease (CHD), Migraines, Inflammatory conditions, A history of stroke.

• #98

  https://consensus.app/questions/tia-causes/

  Research indicates that the prevalence of intracranial arterial stenosis (ICAS) varies between ethnic groups. For instance, ICAS is more common in Chinese patients compared to Caucasians, independent of age and vascular risk factors. This suggests that genetic and environmental factors may play a role in the susceptibility to ICAS and TIA. […] The causes of TIA are multifaceted, involving atherosclerosis, cardiac pathology, small vessel disease, and ethnic differences in susceptibility to conditions like ICAS. Effective prevention and treatment of TIA require a comprehensive approach that includes managing metabolic syndrome, monitoring cardiac health, controlling blood pressure and blood sugar levels, and considering ethnic-specific risk factors. By addressing these underlying causes, healthcare providers can better prevent TIAs and improve patient outcomes.

• #99

  https://consensus.app/questions/tia-causes/

  Research indicates that the prevalence of intracranial arterial stenosis (ICAS) varies between ethnic groups. For instance, ICAS is more common in Chinese patients compared to Caucasians, independent of age and vascular risk factors. This suggests that genetic and environmental factors may play a role in the susceptibility to ICAS and TIA. […] The causes of TIA are multifaceted, involving atherosclerosis, cardiac pathology, small vessel disease, and ethnic differences in susceptibility to conditions like ICAS. Effective prevention and treatment of TIA require a comprehensive approach that includes managing metabolic syndrome, monitoring cardiac health, controlling blood pressure and blood sugar levels, and considering ethnic-specific risk factors. By addressing these underlying causes, healthcare providers can better prevent TIAs and improve patient outcomes.

• #100

  https://www2.hse.ie/conditions/transient-ischaemic-attack-tia/causes/

  Transient ischaemic attacks (TIAs) happen when one of the blood vessels that supply your brain with blood becomes blocked. […] The blockage is usually caused by a blood clot. It can also be caused by pieces of fatty material or air bubbles. In very rare cases, a TIA can be caused by a small amount of bleeding in the brain known as a haemorrhage. […] Blood clots that cause TIAs may form in areas where arteries have been narrowed or blocked over time. Fatty deposits known as plaques cause the blockage or narrowing. […] A type of irregular heartbeat called atrial fibrillation can also cause a TIA. It can lead to blood clots escaping from the heart and becoming lodged in the blood vessels supplying the brain. […] Some of the main risk factors are: age TIAs can happen at any age but they’re more common in people over 55; ethnicity people of south Asian, African or Caribbean descent have a higher TIA risk, partly because rates of diabetes and high blood pressure are higher in these groups; medical history other health conditions such as diabetes can increase your risk of a TIA; weight your risk of having a TIA is higher if you have obesity; diet your risk is higher if you have a diet high in fat and salt; alcohol drinking too much alcohol can increase your TIA risk; smoking – narrows your arteries and makes your blood more likely to clot.

• #101 Transient ischemic attack: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000730.htm

  A transient ischemic attack (TIA) occurs when blood flow to a part of the brain stops for a brief time. A transient ischemic attack is a warning sign that a true stroke may happen in the future (often near future) if something is not done to prevent it. […] The loss of blood flow to an area of the brain can be caused by: A blood clot in an artery of the brain, A blood clot that travels to the brain from somewhere else in the body (for example, from the heart), An injury to blood vessels, Narrowing of a blood vessel in the brain or leading to the brain. […] High blood pressure is the main risk factor for TIAs and stroke. Other major risk factors are: Irregular heartbeat called atrial fibrillation, Diabetes, Family history of stroke, Being male, High cholesterol, Tendency to have abnormal blood clotting, Increasing age, especially after age 55, Ethnicity (African Americans are more likely to die of stroke), Smoking, Alcohol use, Recreational drug use, History of prior TIA or stroke. […] People who have heart disease or poor blood flow in their legs caused by narrowed arteries are also more likely to have a TIA or stroke.

• #102

  https://www2.hse.ie/conditions/transient-ischaemic-attack-tia/

  A transient ischaemic attack (TIA) is also known as a 'mini stroke’. It’s caused by blood temporarily not being able to get to part of the brain. This results in a lack of oxygen to the brain. […] During a TIA, one of the blood vessels that supply your brain with oxygen-rich blood becomes blocked. This blockage is usually caused by a blood clot that travels to the blood vessels supplying the brain. The blockage can also be caused by pieces of fatty material or air bubbles. […] Things that increase your chances of having a TIA include: smoking, high blood pressure (hypertension), obesity, high cholesterol, regularly drinking too much alcohol, a type of irregular heartbeat called atrial fibrillation, diabetes, disease of the carotid artery or a recent neck injury. People over age 55 and people of Asian, African or Caribbean descent are also at a higher risk of having a TIA.

• #103 Transient Ischemic Attack (TIA) | American Stroke Association

  https://www.stroke.org/en/about-stroke/types-of-stroke/tia-transient-ischemic-attack

  A transient ischemic attack, or TIA, is a temporary blockage of blood flow to the brain. The clot usually dissolves on its own or gets dislodged, and the symptoms usually last less than five minutes. […] Major risk factors for a TIA or stroke include: High blood pressure Diabetes Heart disease Atrial fibrillation Smoking. […] Checking the blood flow and tissue within the brain tissue may be important to determine the cause of a TIA or any brief symptoms of stroke. […] The immediate consequences of TIA are fairly benign. But these “warning strokes” often foreshadow a full-blown stroke.

• #104 Related conditions – Transient Ischemic Attack – Causes, Symptoms, Treatment, Diagnosis – MedBroadcast.com

  https://medbroadcast.com/channel/diabetes/related-conditions/transient-ischemic-attack

  A transient ischemic attack (TIA) is an ischemic stroke in which the blood flow is restored quickly and the symptoms typically disappear within 1 to 2 hours. […] TIAs are more common among older people, and often go undiagnosed if the symptoms are not recognized. […] A TIA precedes approximately 15% to 30% of strokes. Therefore, recognition of TIA symptoms is important because preventative treatment may help to reduce the chance of an impending stroke. […] A TIA is caused by the same factors that cause ischemic stroke. Ischemia is the medical term for a reduction of blood and oxygen to the cells. […] The most common sources of brain emboli that cause stroke are the carotid arteries in the neck and the heart. […] The risk factors for TIA are exactly the same as those for stroke: High blood pressure is the number one risk factor.

• #105 TIA (Transient Ischemic Attack): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14173-transient-ischemic-attack-tia-or-mini-stroke

  Transient ischemic attacks and ischemic strokes happen for the same reasons. Those reasons include: […] Formation of a clot in your brain (thrombosis). […] A fragment of a clot that formed elsewhere in your body that breaks free and travels through your blood vessels until it gets stuck in your brain (thromboembolism). […] Small vessel blockage (lacunar stroke). […] Cryptogenic TIA (the word cryptogenic means hidden origin, so these are TIAs that happen with an unknown cause). […] Many factors can contribute to a TIA or make one more likely to happen. Risk factors include: […] High blood pressure (hypertension). This is the most significant of all risk factors for TIA. Its one of the reasons why managing blood pressure is so essential. […] A history of stroke or TIA. Having a previous stroke or TIA raises the risk of having a TIA. […] The main reason that a TIA is a medical emergency is because its often a warning that a stroke is possible or even imminent. Up to 20% of people who have a TIA have a stroke within 90 days, and half of those strokes happen within the first two days after a TIA.

• #106 TIA (Transient Ischemic Attack): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/14173-transient-ischemic-attack-tia-or-mini-stroke

  Transient ischemic attacks and ischemic strokes happen for the same reasons. Those reasons include: […] Formation of a clot in your brain (thrombosis). […] A fragment of a clot that formed elsewhere in your body that breaks free and travels through your blood vessels until it gets stuck in your brain (thromboembolism). […] Small vessel blockage (lacunar stroke). […] Cryptogenic TIA (the word cryptogenic means hidden origin, so these are TIAs that happen with an unknown cause). […] Many factors can contribute to a TIA or make one more likely to happen. Risk factors include: […] High blood pressure (hypertension). This is the most significant of all risk factors for TIA. Its one of the reasons why managing blood pressure is so essential. […] A history of stroke or TIA. Having a previous stroke or TIA raises the risk of having a TIA. […] The main reason that a TIA is a medical emergency is because its often a warning that a stroke is possible or even imminent. Up to 20% of people who have a TIA have a stroke within 90 days, and half of those strokes happen within the first two days after a TIA.

• #107 Patient education: Transient ischemic attack (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/transient-ischemic-attack-beyond-the-basics/print

  In some cases, TIAs can be caused by blood clots that form in the heart and travel to the brain. TIAs can also occur due to narrowing and closing small blood vessels deep inside the brain. These vessels are frequently damaged by high blood pressure or diabetes if left untreated throughout a person’s lifetime. […] Several factors can increase a person’s risk of TIA, including the following: Age greater than 40 years, Heart and blood vessel disease (eg, atrial fibrillation, carotid stenosis), High blood pressure, Smoking, Diabetes, High blood cholesterol levels, Illegal drug use or heavy alcohol use, Recent childbirth, Previous history of transient ischemic attack or stroke, Sedentary lifestyle and lack of exercise, Obesity, Current or past history of blood clots. […] The risk of stroke after a TIA is highest in the first few hours to days after the TIA. For example, the risk of having a stroke in the first two days after TIA has been estimated to be 4 to 10 percent. People with certain characteristics are thought to have a higher risk (ie, closer to 10 percent) of stroke compared with people without these characteristics. […] Sometimes, what was thought to be a TIA was actually a minor stroke with symptoms that resolved. If a CT or MRI scan shows evidence of new ischemic injury in the brain, this confirms that the person had a minor stroke and not a TIA.

• #108 Let’s Talk About Transient Ischemic Attack (TIA) | American Stroke Association

  https://www.stroke.org/en/help-and-support/resource-library/lets-talk-about-stroke/transient-ischemic-attack

  A transient ischemic attack (TIA) is often called a mini-stroke, but it’s really a warning stroke. […] A TIA occurs before about 15 percent of all strokes. […] When a blood vessel in the brain becomes blocked for a short period of time, the blood flow to that area of the brain slows or stops. This lack of blood (and oxygen) often leads to temporary symptoms such as slurred speech or blurry vision. TIAs are usually caused by one of three things: Low blood flow in a major artery carrying blood to the brain. […] A blood clot in another part of the body (such as the heart) that breaks off, travels to the brain and blocks a blood vessel. […] The narrowing of a smaller blood vessel in the brain, usually caused by plaque (a fatty substance) build-up. […] Anyone can have a TIA, but the risk increases with age. Some of the controllable risk factors for TIAs include high blood pressure, smoking, cardiovascular disease, diabetes, blood clots and alcohol abuse.

• #109

  https://consensus.app/questions/tia-causes/

  Metabolic syndrome contributes to systemic inflammation, which activates the coagulation system and may lead to the formation of pathological thrombi, further increasing the risk of TIA. This highlights the importance of managing metabolic syndrome to prevent the onset of atherosclerosis and subsequent TIAs. […] Cardiac pathology, including conditions such as atrial fibrillation and other heart diseases, is another significant cause of TIA. These conditions can lead to the formation of blood clots in the heart, which may travel to the brain and cause a TIA. Studies have shown that patients with cardiac findings have a higher risk of major vascular events, including TIA. […] Small vessel disease (SVD) involves the narrowing or blockage of the small arteries in the brain. It is a common cause of TIA, particularly in patients with a history of hypertension and diabetes. SVD can lead to lacunar strokes, which are small, deep strokes in the brain that can present as TIAs.

• #110 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #111 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

• #112 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459143/

  A transient ischemic attack (TIA) is a medical emergency. It is defined as a transient episode of neurologic dysfunction due to focal brain, spinal cord, or retinal ischemia without acute infarction or tissue injury. […] Specific underlying etiology needs to be managed accordingly. […] TIA subtypes, classified according to the pathophysiological mechanisms, are similar to ischemic stroke subtypes. They include large artery atherothrombosis, cardiac embolism, small vessel (lacunar), cryptogenic, and uncommon subtypes such as vascular dissection, vasculitis, etc. The common risk factors for all TIA include diabetes, hypertension, age, smoking, obesity, alcoholism, unhealthy diet, psychosocial stress, and lack of regular physical activity. A previous history of stroke or TIA will increase substantially the subsequent risk of recurrent stroke or TIA. […] Among all risk factors, hypertension is the most important one for an individual as well as in a population.

• #113 Definition, etiology, and clinical manifestations of transient ischemic attack – UpToDate

  https://www.uptodate.com/contents/definition-etiology-and-clinical-manifestations-of-transient-ischemic-attack

  Stroke and transient ischemic attack (TIA) are caused by one of several pathophysiologic processes affecting the blood flow to the brain. Any of these processes can lead to transient cerebral ischemia (transient ischemic attack or TIA) or permanent cerebral infarction (ischemic stroke): […] The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, or venous thrombosis. […] The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation travels to and lodges in an intracranial vessel. […] The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity. […] While a TIA by definition implies complete resolution of symptoms, its relevance lies in the fact that it is a harbinger of a potential ischemic stroke and permanent cerebral injury, mandating that urgent assessment, risk stratification, and treatment be implemented immediately.

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