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. […] The pathophysiology of TIA depends on the subtype as follows. The common issue is the transient interruption of arterial blood flow to an area of the brain supplied by that particular artery. […] 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 commonest risk factor is hypertension, followed by diabetes and age. […] The mechanism may be a lack of blood flow distal to the site of arterial stenosis or an artery-to-artery embolism, the more common mechanism.

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

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

  TIAs are characterized by a temporary reduction or cessation of cerebral blood flow in a specific neurovascular distribution as a result of partial or total occlusiontypically, from an acute thromboembolic eventor stenosis of a small penetrating vessel. Clinical manifestations will vary, depending on the vessel involved and the cerebral territory it supplies. […] A transient ischemic attack (TIA) is an acute episode of temporary neurologic dysfunction that results from focal cerebral, spinal cord, or retinal ischemia, and is not associated with acute tissue infarction. […] Whereas the classical definition of TIA included symptoms lasting as long as 24 hours, advances in neuroimaging have suggested that many such cases represent minor strokes with resolved symptoms rather than true TIAs. Thus, in 2009 the American Heart Association (AHA) and the American Stroke Association (ASA) endorsed a tissue-based definition of TIA (ie, as an episode of focal ischemia rather than acute infarction) rather than a time-based definition.

• #3 Transient Ischemic Attack: Part I. Diagnosis and Evaluation | AAFP

  https://www.aafp.org/pubs/afp/issues/2012/0915/p521.html

  Transient ischemic attack is defined as transient neurologic symptoms without evidence of acute infarction. […] Over the past 10 years, transient ischemic attack (TIA) has been redefined multiple times to reflect the transient nature of not only the symptoms, but also cerebral ischemia. […] The classic definition for TIA of a sudden, focal neurologic deficit for less than 24 hours was established in the 1960s and was the accepted definition for 40 years. […] In 2002, the TIA Working Group redefined TIA as brief neurologic dysfunction with symptoms typically lasting less than one hour, without evidence of acute infarction. […] This led to the 2009 revision by the American Heart Association/American Stroke Association (AHA/ASA), which now defines TIA as a transient episode of neurologic dysfunction caused by focal cerebral, spinal cord, or retinal ischemia, without acute infarction.

• #4 Transient ischemic attack pathophysiology – wikidoc

  https://www.wikidoc.org/index.php/Transient_ischemic_attack_pathophysiology

  The pathophysiologic mechanism of transient ischemic stroke may include temporary blockage of cerebral large or small blood vessel due to atherothrombotic or embolic cause followed by complete resolution of symptoms within few hours of onset. There may be mild tissue ischemia and hypoxia responsible for transitory symptomatology of patient. The specific clinical presentation of the patient correlates with the area of brain affected due to ischemia […] The pathophysiologic mechanism of transient ischemic stroke may include temporary blockage of large or small cerebral blood vessel due to atherothrombotic or embolic cause followed by complete resolution of symptoms within few hours of onset. There may be mild tissue ischemia and hypoxia responsible for transitory symptomatology of patient. The specific clinical presentation of the patient correlates with the area of brain affected due to ischemia.

• #5 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. […] A TIA is different than a stroke. After a TIA, the blockage breaks up quickly and dissolves on its own. A TIA does not cause brain tissue to die. […] 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. […] 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.

• #6 Transient ischemic attack Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/transient-ischemic-attack

  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. […] A TIA is different than a stroke. After a TIA, the blockage breaks up quickly and dissolves on its own. A TIA does not cause brain tissue to die. […] 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.

• #7 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 a short period of symptoms similar to those of a stroke. It’s caused by a brief blockage of blood flow to the brain. A TIA usually lasts only a few minutes and doesn’t cause long-term damage. […] 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 an ischemic stroke, a blood clot blocks the blood supply to part of the brain. 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. The buildup also may occur in an artery’s branches that supply oxygen and nutrients to the brain. […] Plaques can decrease the blood flow through an artery or lead to the development of a clot. 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.

• #8 Transient Ischemic Attack (TIA) | Concise Medical Knowledge

  https://www.lecturio.com/concepts/transient-ischemic-attack-tia/

  Transient ischemic attack (TIA) is a temporary episode of neurologic dysfunction caused by ischemia. The causes of TIA may be small clots or thromboemboli imposed on a blood vessel compromised by atherosclerosis […] The presentation depends on the pathophysiologic mechanism: embolic, lacunar (small penetrating vessel) TIA, or large artery TIA. Temporary occlusion of a blood vessel (due to a small thrombus, embolus, vasoconstriction, or systemic hypoperfusion) to the brain […] Cerebral or other tissues undergo ischemia. Neurons are deprived of glucose and oxygen failure of mitochondria to produce ATP. Minutes to hours later, before infarction occurs, blood flow is restored and all neurologic dysfunction resolves.

• #9 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).

• #10 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.

• #11 Transient Ischemic Attack – StatPearls – NCBI Bookshelf

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

  Cardiac embolism. A clot in the cardiac chamber, most commonly in the left atrium, is secondary to atrial fibrillation. […] Cryptogenic. This is usually a cortical pattern of ischemia without any identifiable large artery atherothrombosis or cardiac source of emboli. More recently it is often referred to as ESUS (embolic stroke of unknown source). […] The main aim of treatment of TIA is to decrease the risk of subsequent stroke or TIA. Early treatment after a TIA can significantly reduce the risk of early stroke. […] Management of TIAs should focus on treating underlying etiologies.

• #12 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. […] All forms of stroke, including a TIA, result from a disruption in blood flow to the central nervous system. 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.

• #13 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.

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

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

  Transient ischemic attack causes temporary symptoms because theres Reduced blood flow to parts of your brain. […] A transient ischemic attack is like a temporary stroke. It means theres a temporary (transient) lack of blood flow to part of your brain. Without blood flow, the brain cells malfunction and start to die (ischemia). […] 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).

• #15 Transient ischemic attacks: Pathophysiology and medical management – PubMed

  https://pubmed.ncbi.nlm.nih.gov/1264882/

  There is substantial evidence to support the concept that most transient ischemic attacks (TIAs) are caused by microemboli that originate in areas of atherosclerosis in the blood vessels of the neck. […] TIA’s are important risk factors in the development of stroke. […] The most common clinical features of TIAs caused by carotid insufficiency are hemianesthesia and hemiparesis; other symptoms in these cases include headache, dysphasia, and visual field disturbance. […] By far the most common clinical manifestation of vertebrobasilar insufficiency is vertigo.

• #16 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. […] These attacks are often early warning signs of a stroke. […] 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. […] 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. […] The symptoms of a transient ischemic attack are similar to those of a stroke, but are temporary and reversible. […] About one-third of the time, a transient ischemic attack is followed by a stroke. […] Roughly half of such strokes occur within a year of having a transient ischemic attack. […] Treatment of transient ischemic attacks is aimed at preventing stroke.

• #17 Transient Ischemic Attack > Fact Sheets > Yale Medicine

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

  A transient ischemic attack is a brief occurrence during which blood flow to the brain is temporarily cut off, usually by a blood clot, but sometimes by a narrowed carotid artery. This causes stroke-like symptoms for a brief time, until the blood clot breaks apart or dissolves. Once blood flow to the brain is restored, the symptoms of the transient ischemic attack resolve, and no permanent brain damage occurs. […] Transient ischemic attacks are often caused by blood clots that block the flow of blood to the brain. A blood clot may form within the brain, or a clot may travel to the brain from another location. Having narrowed arteries within the brain or leading to the brain may make it more likely for a blockage to occur. Damaged vessels that supply blood to the brain may also increase the risk of a transient ischemic attack. […] People are more likely to have blood clots or narrowed blood vessels if they have high blood pressure, high cholesterol levels, a cardiac arrythmia such as atrial fibrillation, or a clotting disorder.

• #18

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

  Transient ischaemic attacks (TIAs) happen when one of the blood vessels that supply your brain with oxygen-rich blood becomes blocked. […] The blockage in the blood vessels responsible for most TIAs is usually caused by a blood clot that’s formed elsewhere in your body and travelled to the blood vessels supplying the brain. It can also be caused by pieces of fatty material or air bubbles. […] Blood clots that cause TIAs may form in areas where arteries have been narrowed or blocked over time by the build-up of fatty deposits known as plaques. These plaques are formed during a process called atherosclerosis. […] A type of irregular heartbeat called atrial fibrillation can also cause a TIA. It can lead to the formation of blood clots that escape from the heart and become lodged in the blood vessels supplying the brain.

• #19 Transient ischemic attack – Wikipedia

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

  In-situ thrombosis, an obstruction that forms directly in the cerebral vasculature unlike the remote embolism previously mentioned, is another vascular occurrence with possible presentation as TIA. […] 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. […] Globally, the vessel most commonly affected is the middle cerebral artery.

• #20 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). […] 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. […] The cause of a TIA is sought as for causes of ischemic strokes; evaluation includes tests for carotid stenosis, cardiac sources of emboli, atrial fibrillation, and hematologic abnormalities and screening for stroke risk factors. […] Treatment of transient ischemic attacks is aimed at preventing strokes; antiplatelet medications and statins are used.

• #21 Biomarkers for Transient Ischemic Attack: A Brief Perspective of Current Reports and Future Horizons

  https://www.mdpi.com/2077-0383/11/4/1046

  Therefore, introducing biomarkers for TIA can be more challenging since the degree of brain ischemia is much lower, and imaging and laboratory biomarkers are often closer to normal. […] In this systematic review, we evaluated the potential biomarkers and their validity for TIA diagnosis. […] The N-methyl-D-aspartate (NMDA) is a prototype agonist at the NMDA subtype of the ionotropic glutamate receptor. […] Following cerebral ischemia, the expression of the NR2 subunit is upregulated, in contrast to downregulation of the NR1 subunit. […] Elevated plasma levels of the autoantibodies to NR2A/2B NMDA receptor subunits in plasma were reported in patients with TIAs and ischemic stroke, and the levels of NR2A/2B autoantibodies measured within 72 h differentiated ischemic stroke from intracerebral hemorrhage (ICH).

• #22 Biomarkers for Transient Ischemic Attack: A Brief Perspective of Current Reports and Future Horizons

  https://www.mdpi.com/2077-0383/11/4/1046

  DJ-1 protein, with encoding information on the PARK7 gene and a specificity for brain tissue, has several not clearly detected functions, mainly in Parkinson’s disease. […] A postmortem analysis of cerebral spinal fluid (CSF) revealed an increase in DJ-1 protein expression compared to antemortem CSF analysis. […] S100 calcium-binding protein B (S100B) and neuron-specific enolase (NSE), two cerebrum-specific proteins, have shown to be increased in patients with essential hypertension. […] The application of the microarray technique for the detection of gene expression characteristics paved the way to screen large numbers of genes involved in biological reactions and pathways. […] The high-sensitive C-reactive (hsCRP) protein is associated with cardiovascular risk, predicts further ischemic events in patients with TIA, and was linked to an increased risk of recurrent cerebrovascular ischemic events. […] In conclusion, none of the evaluated biomarkers can be recommended for TIA diagnosis.

• #23 Transient Ischemic Attack: Causes, Symptoms, and Emergency Treatment

  https://mhehc.com/blog/transient-ischemic-attack-causes-symptoms-and-emergency-treatment/

  A transient ischemic attack (TIA) is a type of stroke that takes place when blood flow to part of the brain is briefly interrupted. […] Understanding what causes a TIA stroke can help in preventing it. Several factors increase the risk: […] Atrial Fibrillation: An irregular or uneven heartbeat can result in the development of blood clots that travel to the brain. […] Atherosclerosis: This is the buildup of fatty accumulations or deposits in the arteries, which can block blood flow. […] Addressing these causes through lifestyle changes and medical treatments can reduce the risk of experiencing a TIA.

• #24 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, and a history of stroke.

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

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

  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. […] A TIA, by definition, is a temporary issue. But it indicates that a stroke which isnt temporary could happen. That means treating the condition(s) that caused the TIA can help prevent a stroke. […] Many types of medications can help treat the conditions that cause or contribute to a TIA and prevent TIA or stroke from happening in the future. […] Endovascular procedures is the blanket term for all procedures that use thin, tube-like devices threaded into your blood vessels through very small incisions in your skin. Endovascular means inside a blood vessel, and these procedures treat problems from the inside without full surgery.

• #26 Transient ischemic attack: MedlinePlus Medical EncyclopediaLock

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

  TIAs do not cause lasting damage to the brain. But, TIAs are a warning sign that you may have a true stroke in the coming days or months. Some people who have a TIA will have a stroke within 3 months. Half of these strokes happen during the 48 hours after a TIA. The stroke may occur that same day or at a later time. Some people have only a single TIA, and others have more than one TIA. […] You can reduce your chances of a future stroke by following up with your provider to manage your risk factors.

• #27 Transient Ischemic Attack | Barrow Neurological InstituteGroup 9Group 49Group 49

  https://www.barrowneuro.org/condition/transient-ischemic-attacks-tias/

  Additional transient ischemic attacks or ischemic strokes may be prevented by managing risk factors, such as quitting smoking, treatment of high blood pressure and heart disease, and control of blood sugar levels for those with diabetes. […] Identifying the precise cause of the TIA is important for preventing a future stroke.

• #28 Transient Ischemic Attack | Barrow Neurological InstituteGroup 9Group 49Group 49

  https://www.barrowneuro.org/condition/transient-ischemic-attacks-tias/

  A transient ischemic attack (TIA), also called a mini-stroke, is a disturbance in brain function caused by a temporary blockage of blood to the brain. […] The blockage causing the TIA becomes dislodged or is dissolved by natural clot dissolvers in the blood, called anticoagulants, and blood flow to the brain is restored before any permanent damage occurs. […] Once the transient ischemic attack (TIA) causes have been determined, the goal of treatment is to correct the cause in order to prevent a future stroke. […] Your physician may suggest medications to prevent stroke, such as antiplatelet (aspirin, thienophyridine derivatives) and anticoagulant drugs (warfarin) that make your blood less prone to clotting. […] If your neurologist determines that partial blockage of your carotid artery (the blood vessel on each side of the neck that carries blood to the brain) is responsible for your stroke, one of the following medical procedures may be recommended: Carotid endarterectomy –a surgical procedure to clear carotid arteries of fatty deposits

• #29

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

  Brain cells are affected within seconds of the blockage. This causes symptoms in the parts of the body that are controlled by those cells. […] 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. […] Treatment for TIA is focused on preventing a stroke. A heart-healthy lifestyle and medicine can help. You may take medicine to prevent blood clots, lower blood pressure, lower cholesterol, and manage other health problems. Some people have surgery or a procedure to widen narrowed carotid arteries that supply blood to the brain. […] Medicines to prevent blood clots are often used. This is because blood clots can cause TIAs and strokes. The types of medicines that prevent clotting are antiplatelets and anticoagulants.

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

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

  When catheter-based procedures arent possible, surgery may be an option to widen blood vessels. That can prevent another TIA or stroke. An example of a surgery like this is carotid endarterectomy to clean up the plaque and create a wider space for blood to flow through into your brain. […] Sometimes, but not always. Many TIAs happen for preventable reasons. But a TIA can also happen for unpredictable or unexpected reasons. […] The outlook for a TIA depends strongly on whats causing it and what you do about it. Without treatment, your stroke risk within the next 90 days especially the first two days after the TIA can be very high.

• #31

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

  Anticoagulants prevent blood clots from forming. And they keep existing blood clots from getting bigger. Examples include: Direct oral anticoagulants. Warfarin. […] If you have serious blockage in the carotid arteries in your neck, you may choose to have a procedure to open the narrowed arteries. This can improve blood flow and help prevent a stroke. […] During a surgical procedure, called carotid endarterectomy, a surgeon removes plaque buildup in the carotid arteries. During a catheter procedure, called carotid artery stenting, a thin tube is used to widen the narrowed artery and place a stent inside. The stent helps keep the artery open. […] When a procedure is being considered after a TIA, the benefits and risks must be carefully weighed because the procedures may cause a stroke. Factors in the decision about having a procedure include your age, prior overall health, and current condition.

• #32 Transient ischaemic attack (TIA) | Stroke Association

  https://www.stroke.org.uk/stroke/type/tia

  A transient ischaemic attack (TIA or mini-stroke) is the same as a stroke, but the symptoms last a short time. You get stroke symptoms because a clot is blocking the blood supply in your brain. When the clot moves away, the stroke symptoms stop. […] A TIA is a warning you’re at risk of having a stroke. The risk is greatest in the first days and weeks after a TIA. You urgently need to find out what caused the TIA and get advice and treatment to help you stay healthy. […] Clots in the brain can happen in different ways, and doctors look for risk factors like high blood pressure, heart problems, or smoking. They will talk to you about your health and give you the treatment and advice you need. […] Having a TIA is a warning you are at risk of having a stroke. If you do not seek urgent medical help, you may go on to have another TIA or a stroke. So it’s important to get treatment as soon as possible to reduce your risk.

• #33 Transient Ischemic Attack Outpatient Clinic: Past Journey and Future Adventure

  https://www.mdpi.com/2077-0383/12/13/4511

  A transient ischemic attack (TIA) is manifested by transient focal neurologic dysfunction due to loss of blood flow to the brain, spinal cord, or retina without evident acute infarction or tissue injury. […] TIA precedes about 20% of stroke events, and appropriate strategies should be obtained to prevent detrimental complications in patients with TIA. […] The primary definition of TIA emphasized the temporary nature of the symptoms to distinguish it from a minor stroke. […] Deploying imaging in the assessment of patients with suggestive symptoms of TIA revealed the presence of cerebral ischemia in up to half of the patients, even in the early hours, or unremarkable imaging in some patients with more prolonged neurological symptoms. […] Similar to the outcomes in patients with stroke, growing evidence suggests a decreased risk of recurrent ischemic events among patients with TIA who received antiplatelets. […] Diffusion-weighted MRI is the preferred method for the detection of cerebral ischemia in the acute phase. […] Rapid-access outpatient clinics are promising models to mitigate the length of hospital stays and total cost to the health system.

• #34 Transient Ischemic Attack: Part I. Diagnosis and Evaluation | AAFP

  https://www.aafp.org/pubs/afp/issues/2012/0915/p521.html

  A lack of evidence of infarction on magnetic resonance imaging (MRI) in patients who have symptoms consistent with cerebral ischemia distinguishes TIA from minor stroke. […] The presence of infarction on MRI can have important prognostic implications. […] Using the new definition, many patients with classically defined TIA would be redefined as having a minor stroke if there is evidence of acute infarction on MRI.

• #35 The After Effects of Transient Ischemic Attack | Cognitive FX

  https://www.cognitivefxusa.com/blog/after-effects-of-transient-ischemic-attack

  A transient ischemic attack (TIA) is a temporary vascular blockage, usually from fatty deposits (plaque buildup), that reduces or halts blood flow to part of the brain. 'Transient’ indicates its duration, typically less than one hour but occasionally longer. An ischemic stroke is caused by clotting rather than blood vessel rupture, ending when the clot dissolves and blood flow resumes. […] During a transient ischemic attack, a blood clot restricts or prevents blood from reaching certain subsections of the brain. These parts of the brain may go without needed resources such as sugar and oxygen for minutes to hours. After the TIA resolves, the brain doesn’t fully return to normal. Functional MRI (fMRI) studies show that even the resting state MRI of TIA patients is abnormal. (This means that their brains don’t look like normal healthy brains do, even while resting from tasks).

• #36 The After Effects of Transient Ischemic Attack | Cognitive FX

  https://www.cognitivefxusa.com/blog/after-effects-of-transient-ischemic-attack

  Those minutes to hours of restricted blood flow during a TIA can be enough to cause dysfunctional neurovascular coupling, which is the relationship between your neurons and the blood vessels that supply them. […] In short, neurovascular coupling is how neurons get the oxygen and other nutrients they need to function. When that relationship is disrupted, an area of the brain may start a task and fail to complete it due to a lack of resources. Or, it might call for more blood supply than it should, depriving other parts of the brain of what it needs. On imaging, we see this dysfunction as hyperactive (doing too much or taking too many resources) or hypoactive (doing too little) regions of the brain. […] That signaling dysfunction is behind many of the lingering symptoms after a TIA. […] A TIA often occurs deep in the center of the brain. The carotid arteries bring blood to the brain, with smaller and smaller blood vessels traveling to specific subsections, like tree branches. After the blockage breaks up, pieces of the clot may travel down the smaller blood vessels (capillaries) until becoming lodged in place again. As a result, you may have a cluster of brain cells that die when they no longer receive fresh oxygen. […] If the TIA causes any brain cells to die, it shows up as little white dots on magnetic resonance imaging (MRI) of the brain. […] Recovering from that damage means teaching the brain to route communication around the damaged areas and restoring healthy neurovascular coupling.

• #37 Transient Ischemic Attacks (TIAs) – Brain, Spinal Cord, and Nerve Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/brain-spinal-cord-and-nerve-disorders/stroke/transient-ischemic-attacks-tias

  Treatment of TIAs is aimed at preventing a stroke. It is the same as treatment after an ischemic stroke. […] The degree of narrowing in the carotid arteries helps doctors estimate the risk of a stroke or subsequent TIAs and thus determine the need for further treatment. If people are thought to be at high risk (for example, if the carotid artery is narrowed at least 70%), an operation to widen the artery (called carotid endarterectomy) may be done to reduce the risk.

• #38 Transient ischemic attack – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/107

  Transient ischemic attack (TIA) should be suspected when a patient presents with typical symptoms of rapidly resolving unilateral weakness or numbness, but also with less classic symptoms such as unilateral vision loss, diplopia, transient aphasia, or vertigo. […] Evaluation focuses on workup of underlying etiology. Treatment hinges on secondary prevention with anticoagulants in cases of embolic etiology or thrombophilia (acquired or inherited), or with antiplatelet therapy for nonembolic events. Modifiable risk factors such as carotid stenosis, hypertension, hyperlipidemia, and lifestyle are other targets of therapy. […] A transient ischemic attack (TIA) is a transient episode of neurologic dysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction. […] The definitions of TIA and ischemic stroke are now „tissue-based” rather than defined by the duration of neurologic dysfunction: there is no ischemic lesion visible on brain imaging in a patient with TIA. An ischemic brain lesion on brain imaging, even if a patient’s episode of focal neurologic dysfunction rapidly resolves, signifies an ischemic stroke. […] The arbitrary definition of duration of symptoms for TIA should not deter aggressive therapy for a patient who presents with new neurologic deficit.

• #39 Transient Ischemic Attack | Peter O’Donnell Jr. Brain Institute | Condition | UT Southwestern Medical Center

  https://utswmed.org/conditions-treatments/transient-ischemic-attack/

  Treatment focuses on addressing the cause of the TIA to prevent an actual stroke. For example, physicians might prescribe: Antiplatelet agents or anticoagulants to prevent blood clots, Blood pressure medication, Cholesterol-lowering medication. […] When carotid artery disease is the cause, we might recommend surgery to clear out the fatty deposits that have narrowed the carotid artery in the neck before another TIA or an actual stroke can occur.

• #40 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

  Since TIA symptoms resolve on their own, your health care provider will likely work with you to address the underlying causes to prevent additional TIAs or a stroke. Treatment options will depend upon the cause or causes, your medical history, and the results of any testing. Treatment often includes medication and lifestyle changes and could include surgery. Effective treatment may help reduce your risk for stroke or another TIA.

• #41 A Transient Ischemic Attack (TIA) is as Urgent as a Stroke > News > Yale Medicine

  https://www.yalemedicine.org/news/transient-ischemic-attack-urgent-as-stroke

  If your diagnosis is a TIA, a medical evaluation can help determine whether and how best to treat it to prevent a full-blown stroke later on. We will do other tests to try to understand a patient’s risk of future stroke and what treatments will lower their risk. […] Treatment of the TIA also prevents stroke in some cases. This includes antiplatelet medications, such as aspirin or clopidogrel (Plavix), that prevent blood clots from forming. Anticoagulant medications, such as warfarin (Coumadin) or apixaban (Eliquis) also known as blood thinners, interfere with and slow down the clotting process. […] The AHA/ASA scientific statement notes that an early consult with a neurologist following a TIA has been associated with lower 90-day and one-year mortality rates.

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