Materiały źródłowe

• #1 POTS: Causes, Symptoms, Diagnosis & Treatment

  https://my.clevelandclinic.org/health/diseases/16560-postural-orthostatic-tachycardia-syndrome-pots

  Postural orthostatic tachycardia syndrome (POTS) is a condition that causes your heart to beat faster than normal when you transition from sitting or lying down to standing up. Its a type of orthostatic intolerance. […] POTS can be difficult for healthcare providers to diagnose due to the many symptoms that can occur over time. People with POTS may have symptoms for months to years before finally being diagnosed with the condition. […] A tilt table test is the main way providers diagnose POTS. The tilt table test measures your heart rate and blood pressure as you change posture and position. […] Besides the tilt table test, your provider may order other tests to help confirm a POTS diagnosis or rule out other possible causes of your symptoms, including: Blood and urine tests for causes of POTS and conditions that mimic POTS.

• #2 Diagnosis and management of postural orthostatic tachycardia syndrome

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8920526/

  Postural orthostatic tachycardia syndrome (POTS) is a chronic multisystem disorder; the cardinal feature is orthostatic tachycardia. […] The main characteristic of postural orthostatic tachycardia syndrome (POTS) is tachycardia when standing, without a drop in blood pressure. […] Various professional societies in North America have published consensus criteria for the diagnosis of POTS, including the American Autonomic Society, the Heart Rhythm Society, the Canadian Cardiovascular Society and, most recently, a POTS Working Group for the United States National Institutes of Health. […] The criteria for a diagnosis of POTS are listed in Box 2. Symptoms must occur after standing, with a marked increase in heart rate, but without a substantial drop in blood pressure. […] The orthostatic tachycardia must occur in the absence of classical orthostatic hypotension, but transient initial orthostatic hypotension does not preclude a diagnosis of POTS.

• #3 Diagnosis and management of postural orthostatic tachycardia syndrome

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8920526/

  Postural orthostatic tachycardia syndrome (POTS) is a chronic multisystem disorder; the cardinal feature is orthostatic tachycardia. […] The main characteristic of postural orthostatic tachycardia syndrome (POTS) is tachycardia when standing, without a drop in blood pressure. […] Various professional societies in North America have published consensus criteria for the diagnosis of POTS, including the American Autonomic Society, the Heart Rhythm Society, the Canadian Cardiovascular Society and, most recently, a POTS Working Group for the United States National Institutes of Health. […] The criteria for a diagnosis of POTS are listed in Box 2. Symptoms must occur after standing, with a marked increase in heart rate, but without a substantial drop in blood pressure. […] The orthostatic tachycardia must occur in the absence of classical orthostatic hypotension, but transient initial orthostatic hypotension does not preclude a diagnosis of POTS.

• #4 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #5 POTS For Practitioners – Australian POTS Foundation

  https://potsfoundation.org.au/pots-for-practitioners/

  Diagnosis of POTS requires: A sustained rise in heart rate of 30 bpm in adults (or 40 bpm in adolescents) within the first 10 minutes of standing, OR An absolute heart rate 120 beats per minute. An absence of orthostatic hypotension, defined as a decrease in systolic blood pressure of 20 mmHg or diastolic blood pressure of 10 mmHg within the first 3 minutes of standing. Presence of unexplained symptoms for at least 3 months. […] The Canadian Position Statement suggests that it is not appropriate to apply the delta heart rate rise to individuals with a resting heart rate 60 bpm. […] POTS should be suspected if there is: A sustained heart rate rise on standing 30 bpm (or 40 bpm in adolescents) OR and absolute heart rate 120 bpm during the test. An absence of orthostatic hypotension (20/10 mmHg blood pressure drop on standing). Chronicity of symptoms 3 months from trigger. Associated orthostatic symptoms such as light-headedness, visual disturbance, pre-syncope. An absence of a known secondary cause of symptoms (dehydration, medication, anaemia, sepsis). […] To establish the absence of secondary causes of symptoms the following investigations are recommended before confirming a POTS diagnosis.

• #6 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #7 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Postural orthostatic tachycardia syndrome (POTS) is a common autonomic nervous system disorder characterized by an excessively fast heart rate and symptoms of lightheadedness upon standing. The current diagnostic criteria for POTS is a heart rate increase of 30 beats per minute (bpm) or more, or over 120 bpm, within the first 10 minutes of standing, in the absence of orthostatic hypotension. POTS is often diagnosed by a Tilt Table Test, but if such testing is not available, POTS can be diagnosed with bedside measurements of heart rate and blood pressure taken in the supine (laying down) and standing up position at 2, 5 and 10 minute intervals. This is called the Active Stand Test. Unfortunately, the Active Stand Test may miss some cases of POTS, so while it is appropriate to use to help diagnose POTS, caution should be used in ruling out POTS with an Active Stand Test when a patient has symptoms consistent with POTS.

• #8 Postural Orthostatic Tachycardia Syndrome (POTS) (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/pots.html

  Postural orthostatic tachycardia syndrome (POTS) is a disorder that can make someone feel faint or dizzy. […] There’s no single test to diagnose POTS. Doctors start by doing a complete physical exam and taking a medical history. […] In kids and teens, POTS causes a heart rate increase of 40 or more beats per minute within 10 minutes of when they move from a supine (lying down) position to a standing one. […] Sometimes, doctors do a „tilt table test.” In this test, a person is strapped to a table, then tilted from a supine (lying on the back) position into a standing position while heart rate and blood pressure are monitored. […] Typically, a diagnosis of POTS is confirmed when symptoms have lasted for several months and no other causes are found.

• #9 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Postural orthostatic tachycardia syndrome (POTS) is a common autonomic nervous system disorder characterized by an excessively fast heart rate and symptoms of lightheadedness upon standing. The current diagnostic criteria for POTS is a heart rate increase of 30 beats per minute (bpm) or more, or over 120 bpm, within the first 10 minutes of standing, in the absence of orthostatic hypotension. POTS is often diagnosed by a Tilt Table Test, but if such testing is not available, POTS can be diagnosed with bedside measurements of heart rate and blood pressure taken in the supine (laying down) and standing up position at 2, 5 and 10 minute intervals. This is called the Active Stand Test. Unfortunately, the Active Stand Test may miss some cases of POTS, so while it is appropriate to use to help diagnose POTS, caution should be used in ruling out POTS with an Active Stand Test when a patient has symptoms consistent with POTS.

• #10 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #11 Diagnosis and management of postural orthostatic tachycardia syndrome

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8920526/

  Postural orthostatic tachycardia syndrome (POTS) is a chronic multisystem disorder; the cardinal feature is orthostatic tachycardia. […] The main characteristic of postural orthostatic tachycardia syndrome (POTS) is tachycardia when standing, without a drop in blood pressure. […] Various professional societies in North America have published consensus criteria for the diagnosis of POTS, including the American Autonomic Society, the Heart Rhythm Society, the Canadian Cardiovascular Society and, most recently, a POTS Working Group for the United States National Institutes of Health. […] The criteria for a diagnosis of POTS are listed in Box 2. Symptoms must occur after standing, with a marked increase in heart rate, but without a substantial drop in blood pressure. […] The orthostatic tachycardia must occur in the absence of classical orthostatic hypotension, but transient initial orthostatic hypotension does not preclude a diagnosis of POTS.

• #12 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #13 Postural Orthostatic Tachycardia Syndrome

  https://practicalneurology.com/diseases-diagnoses/imaging-testing/postural-orthostatic-tachycardia-syndrome/31643/

  POTS is a clinically defined syndrome with many possible symptoms that relate to dysfunction of the autonomic nervous system. […] The main symptoms of POTS are related to intolerance of upright posture (eg, standing, prolonged sitting). […] Consensus diagnostic criteria for POTS were developed by the American Rhythm Society in 2015. Diagnosis should be considered based on symptoms present, including an increase in heart rate of 30 beats per minute (bpm) when moving from lying to standing (or 40 bpm in individuals age 12-19 years); and the absence of orthostatic hypotension (20 mm Hg drop in systolic blood pressure). […] A clinical diagnosis of POTS is appropriate if the symptoms and cardiovascular criteria are fulfilled. […] The diagnosis of POTS, which is clinical and does not require ancillary testing, should be considered in individuals presenting with these symptoms.

• #14 POTS For Practitioners – Australian POTS Foundation

  https://potsfoundation.org.au/pots-for-practitioners/

  Diagnosis of POTS requires: A sustained rise in heart rate of 30 bpm in adults (or 40 bpm in adolescents) within the first 10 minutes of standing, OR An absolute heart rate 120 beats per minute. An absence of orthostatic hypotension, defined as a decrease in systolic blood pressure of 20 mmHg or diastolic blood pressure of 10 mmHg within the first 3 minutes of standing. Presence of unexplained symptoms for at least 3 months. […] The Canadian Position Statement suggests that it is not appropriate to apply the delta heart rate rise to individuals with a resting heart rate 60 bpm. […] POTS should be suspected if there is: A sustained heart rate rise on standing 30 bpm (or 40 bpm in adolescents) OR and absolute heart rate 120 bpm during the test. An absence of orthostatic hypotension (20/10 mmHg blood pressure drop on standing). Chronicity of symptoms 3 months from trigger. Associated orthostatic symptoms such as light-headedness, visual disturbance, pre-syncope. An absence of a known secondary cause of symptoms (dehydration, medication, anaemia, sepsis). […] To establish the absence of secondary causes of symptoms the following investigations are recommended before confirming a POTS diagnosis.

• #15 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #16 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #17 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments […] POTS is defined as the presence of chronic symptoms of orthostatic intolerance (6 months) accompanied by an increased heart rate (HR) 30 bpm within 10 minutes of assuming an upright posture and in the absence of orthostatic hypotension (blood pressure [BP] fall 20/10 mmHg). […] Morning postural assessments will optimize diagnostic sensitivity (at the expense of specificity) for POTS. […] The orthostatic tachycardia must occur in the absence of other overt causes of orthostatic tachycardia (e.g., acute blood loss), medications that impair autonomic regulation, or other chronic debilitating disorders that might cause tachycardia (e.g., anemia, diabetes with known autonomic neuropathy, systemic infectious or inflammatory conditions, hyperthyroidism).

• #18 Postural Orthostatic Tachycardia Syndrome (PoTS Syndrome)

  https://patient.info/doctor/postural-tachycardia-syndrome-pots-pro

  Postural orthostatic tachycardia syndrome (PoTS) is a group of disorders where symptoms arise from abnormal autonomic response to the upright position. On becoming upright, people with PoTS develop tachycardia and symptoms of orthostatic intolerance. It is frequently missed or misdiagnosed, and may be primary or secondary in origin. […] The gold standard for PoTS diagnosis is head-up tilt test with non-invasive beat-to-beat haemodynamic monitoring. […] Sustained rise in heart rate of 30 beats per minute within 10 minutes of standing or on tilt test in the absence of orthostatic hypotension. […] Standing heart rate is often 120 beats per minute. […] As well as orthostatic tachycardia, there may be symptoms of cerebral hypoperfusion and autonomic overactivity which are relieved by lying down.

• #19 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Postural orthostatic tachycardia syndrome (POTS) is a common autonomic nervous system disorder characterized by an excessively fast heart rate and symptoms of lightheadedness upon standing. The current diagnostic criteria for POTS is a heart rate increase of 30 beats per minute (bpm) or more, or over 120 bpm, within the first 10 minutes of standing, in the absence of orthostatic hypotension. POTS is often diagnosed by a Tilt Table Test, but if such testing is not available, POTS can be diagnosed with bedside measurements of heart rate and blood pressure taken in the supine (laying down) and standing up position at 2, 5 and 10 minute intervals. This is called the Active Stand Test. Unfortunately, the Active Stand Test may miss some cases of POTS, so while it is appropriate to use to help diagnose POTS, caution should be used in ruling out POTS with an Active Stand Test when a patient has symptoms consistent with POTS.

• #20 POTS For Practitioners – Australian POTS Foundation

  https://potsfoundation.org.au/pots-for-practitioners/

  Diagnosis of POTS requires: A sustained rise in heart rate of 30 bpm in adults (or 40 bpm in adolescents) within the first 10 minutes of standing, OR An absolute heart rate 120 beats per minute. An absence of orthostatic hypotension, defined as a decrease in systolic blood pressure of 20 mmHg or diastolic blood pressure of 10 mmHg within the first 3 minutes of standing. Presence of unexplained symptoms for at least 3 months. […] The Canadian Position Statement suggests that it is not appropriate to apply the delta heart rate rise to individuals with a resting heart rate 60 bpm. […] POTS should be suspected if there is: A sustained heart rate rise on standing 30 bpm (or 40 bpm in adolescents) OR and absolute heart rate 120 bpm during the test. An absence of orthostatic hypotension (20/10 mmHg blood pressure drop on standing). Chronicity of symptoms 3 months from trigger. Associated orthostatic symptoms such as light-headedness, visual disturbance, pre-syncope. An absence of a known secondary cause of symptoms (dehydration, medication, anaemia, sepsis). […] To establish the absence of secondary causes of symptoms the following investigations are recommended before confirming a POTS diagnosis.

• #21 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Detailed questioning of the patient is the key to accurate diagnosis. Physical examination and appropriate investigations are also important. […] Patients are often diagnosed by a cardiologist, neurologist, medicine for the elderly consultant or a paediatrician, although a GP can also diagnose PoTS. To be given a diagnosis of PoTS, a person needs to meet the definition and diagnostic criteria shown here. […] The active stand test or NASA lean test can be used to diagnose PoTS. Under careful supervision, heart rate and blood pressure are measured after resting lying down, then immediately upon standing and then at frequent intervals until 10 minutes. This test should bring on symptoms of PoTS and some people may faint. […] Although a diagnosis of PoTS should be made by an increase in heart rate of 30 bpm within the first 10 minutes, this upright position can last between 10 and 45 minutes.

• #22 POTS: Diagnosing and treating this dizzying syndrome – Harvard Health

  https://www.health.harvard.edu/blog/pots-diagnosing-and-treating-this-dizzying-syndrome-202110062611

  Most of us don’t think twice about standing up. Yet for people affected by a disorder called postural orthostatic tachycardia syndrome (POTS), the simple act of standing can provoke lightheadedness and a racing heartbeat. This post discusses diagnosis, treatment, and living with POTS. […] Measuring blood pressure and heart rate while lying down, then while standing (orthostatic vital signs), can help cardiologists like me diagnose POTS. Within 10 minutes of standing, the heart rate rises at least 30 beats per minute (bpm) in POTS and, importantly, the blood pressure remains stable (systolic blood pressure drops by no more than 20 mm Hg). […] These findings, along with symptoms of orthostatic intolerance (most commonly lightheadedness and fatigue), must be present for at least three to six months for a person to be diagnosed with POTS. Because many doctors are not familiar with POTS, and since there is no laboratory test to confirm it, people often experience symptoms for several years before being diagnosed.

• #23 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #24 POTS: Causes, Symptoms, Diagnosis & Treatment

  https://my.clevelandclinic.org/health/diseases/16560-postural-orthostatic-tachycardia-syndrome-pots

  Postural orthostatic tachycardia syndrome (POTS) is a condition that causes your heart to beat faster than normal when you transition from sitting or lying down to standing up. Its a type of orthostatic intolerance. […] POTS can be difficult for healthcare providers to diagnose due to the many symptoms that can occur over time. People with POTS may have symptoms for months to years before finally being diagnosed with the condition. […] A tilt table test is the main way providers diagnose POTS. The tilt table test measures your heart rate and blood pressure as you change posture and position. […] Besides the tilt table test, your provider may order other tests to help confirm a POTS diagnosis or rule out other possible causes of your symptoms, including: Blood and urine tests for causes of POTS and conditions that mimic POTS.

• #25 Postural orthostatic tachycardia syndrome is an under-recognized condition in chronic fatigue syndrome

  https://www.meresearch.org.uk/research/postural-orthostatic-tachycardia/

  It has been suggested that postural orthostatic tachycardia syndrome (POTS) be considered in the differential diagnosis of those with chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME). […] POTS was defined as symptoms of orthostatic intolerance associated with an increase in heart rate from the supine to upright position of 30 beats per minute or to a heart rate of 120 beats per minute on standing. […] Of the CFS/ME group, 27% (16/59) had POTS compared with 9% (5) in the control population (P = 0.006). […] POTS is a frequent finding in patients with CFS/ME. […] The clinical evaluation of patients with CFS/ME should include response to standing. […] POTS is relatively common in ME/CFS patients, and their clinical evaluation should include autonomic function tests such as the response to standing.

• #26 Postural orthostatic tachycardia syndrome (POTS): a diagnostic dilemma – The British Journal of Cardiology

  https://bjcardio.co.uk/2010/02/postural-orthostatic-tachycardia-syndrome-pots-a-diagnostic-dilemma/

  Postural orthostatic tachycardia syndrome (POTS) is a condition that results from orthostatic intolerance. Patients, frequently young females, present with tachycardia, headache, palpitation, sweating, nausea and near syncope, on changing their posture from lying to standing. It is frequently misdiagnosed as panic attacks or anxiety neurosis. Tilt-table testing is diagnostic. […] Tilt-table testing has become the gold standard for diagnosing this disorder. […] On tilt-table testing the supine blood pressure was 100/88 mmHg with heart rate 88 beats per minute, at 10 minutes of 70 degree up-tilt blood pressure was 104/70 mmHg with heart rate 120 beats per minute. […] These tilt-table results are diagnostic of POTS, and in her case it is the primary type. […] POTS is defined as orthostatic intolerance associated with tachycardia exceeding 120 beats per minute or an increase in the heart rate of 30 beats per minute from baseline within 10 minutes of changing the posture from a lying to standing position, in the absence of long-term chronic diseases and medications that affect the autonomic or vascular tone. […] The tilt-table test is the gold standard for diagnosis, and treatment depends on identifying the subtype.

• #27 Postural Orthostatic Tachycardia Syndrome (POTS) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/p/postural-orthostatic-tachycardia-syndrome-pots.html

  POTS is distinguished from other OI syndromes by a rapid increase in the heartbeat of more than 30 beats per minute, or a heart rate that exceeds 120 beats per minute within 10 minutes of standing. […] Diagnosis of POTS will generally begin with the physician taking a medical history and performing a physical exam. During the physical exam, the physician may perform a tilt table study to evaluate the heart and blood pressure when the body changes positions. Based on the tilt table test and the patient’s symptoms, an accurate diagnosis can often be made. […] In some instances, the physician may order additional tests to rule out other conditions. These diagnostic tests may examine the heart muscle, the blood flow through the heart, and any potential abnormal electrical impulses. An electrocardiogram (EKG) is a painless procedure that provides a picture of the electrical activity of the heart and how the heart is working.

• #28 Postural orthostatic tachycardia syndrome (POTS): a diagnostic dilemma – The British Journal of Cardiology

  https://bjcardio.co.uk/2010/02/postural-orthostatic-tachycardia-syndrome-pots-a-diagnostic-dilemma/

  Postural orthostatic tachycardia syndrome (POTS) is a condition that results from orthostatic intolerance. Patients, frequently young females, present with tachycardia, headache, palpitation, sweating, nausea and near syncope, on changing their posture from lying to standing. It is frequently misdiagnosed as panic attacks or anxiety neurosis. Tilt-table testing is diagnostic. […] Tilt-table testing has become the gold standard for diagnosing this disorder. […] On tilt-table testing the supine blood pressure was 100/88 mmHg with heart rate 88 beats per minute, at 10 minutes of 70 degree up-tilt blood pressure was 104/70 mmHg with heart rate 120 beats per minute. […] These tilt-table results are diagnostic of POTS, and in her case it is the primary type. […] POTS is defined as orthostatic intolerance associated with tachycardia exceeding 120 beats per minute or an increase in the heart rate of 30 beats per minute from baseline within 10 minutes of changing the posture from a lying to standing position, in the absence of long-term chronic diseases and medications that affect the autonomic or vascular tone. […] The tilt-table test is the gold standard for diagnosis, and treatment depends on identifying the subtype.

• #29 How Doctors Diagnose & Test for POTS • MyHeart

  https://myheart.net/pots-syndrome/diagnosis-tests/

  Tilt testing is done to see if being held upright provokes the symptoms of POTS syndrome, such as a fall in blood pressure, an increase in heart rate, dizziness, or even passing out. […] POTS patients will typically have an increase in heart rate of >30 beats per minute in response to the tilt testing. There may also be a wide variety of symptoms experienced. In POTS there is not usually a significant drop in blood pressure. […] Tests to assess the heart rhythm are normally performed as part of a POTS diagnosis. An EKG is performed to see if there is a normal resting heart rhythm. […] An echocardiogram may be performed to assess the structure and function of the heart. This will help to ensure a normal pumping function of the heart and to rule out the presence of valvular and other disorders.

• #30 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Detailed questioning of the patient is the key to accurate diagnosis. Physical examination and appropriate investigations are also important. […] Patients are often diagnosed by a cardiologist, neurologist, medicine for the elderly consultant or a paediatrician, although a GP can also diagnose PoTS. To be given a diagnosis of PoTS, a person needs to meet the definition and diagnostic criteria shown here. […] The active stand test or NASA lean test can be used to diagnose PoTS. Under careful supervision, heart rate and blood pressure are measured after resting lying down, then immediately upon standing and then at frequent intervals until 10 minutes. This test should bring on symptoms of PoTS and some people may faint. […] Although a diagnosis of PoTS should be made by an increase in heart rate of 30 bpm within the first 10 minutes, this upright position can last between 10 and 45 minutes.

• #31 Postural Tachycardia Syndrome (PoTS): Causes and Treatment

  https://patient.info/brain-nerves/postural-tachycardia-syndrome-pots-leaflet

  Postural tachycardia syndrome (PoTS) is an abnormal response of your body when you are upright (usually when standing). […] The symptoms of PoTS occur when you are upright and are relieved when lying down. These symptoms are associated with an abnormally high and persistent increase in heart rate within ten minutes of standing. […] How is postural tachycardia syndrome (PoTS) diagnosed? […] The symptoms often indicate the diagnosis of PoTS. Your doctor will arrange blood tests to rule out other causes of your symptoms. You will need to be referred to a specialist to confirm the diagnosis. The investigations used to confirm the diagnosis of PoTS or to exclude other conditions may include: […] Active stand test […] Tilt table test […] Both the active stand test and the tilt table test are stopped if you faint or if enough recordings have been made either to confirm or to exclude the diagnosis.

• #32 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Detailed questioning of the patient is the key to accurate diagnosis. Physical examination and appropriate investigations are also important. […] Patients are often diagnosed by a cardiologist, neurologist, medicine for the elderly consultant or a paediatrician, although a GP can also diagnose PoTS. To be given a diagnosis of PoTS, a person needs to meet the definition and diagnostic criteria shown here. […] The active stand test or NASA lean test can be used to diagnose PoTS. Under careful supervision, heart rate and blood pressure are measured after resting lying down, then immediately upon standing and then at frequent intervals until 10 minutes. This test should bring on symptoms of PoTS and some people may faint. […] Although a diagnosis of PoTS should be made by an increase in heart rate of 30 bpm within the first 10 minutes, this upright position can last between 10 and 45 minutes.

• #33 POTS: Diagnosis and Management Guide for Nurses | NRR

  https://www.dovepress.com/postural-orthostatic-tachycardia-syndrome-diagnosis-and-management-gui-peer-reviewed-fulltext-article-NRR

  A 10-minute Active Stand Test can be easily performed in most clinical settings. […] A positive result, meeting criteria for POTS, is a sustained heart rate rise of 30 beats per minute in adults and 40 beats per minute in those aged 12-19 years and in the absence of orthostatic hypotension (drop in systolic blood pressure of 20 mmHg within 3 minutes of standing). […] Given the fluctuating nature of the condition, a negative Active Stand Test does not conclusively exclude a POTS diagnosis. […] The presence of extra-cardiac autonomic symptoms should prompt the clinician to maintain a high index of suspicion. […] A Head Up Tilt Table Test can be considered if it is deemed unsafe to perform the Active Stand Test or if the patient is unable to stand but is not required for diagnosis.

• #34 Postural orthostatic tachycardia syndrome – Wikipedia

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

  Alternative tests to the tilt table test are also used, such as the NASA Lean Test and the adapted Autonomic Profile (aAP) which require less equipment to complete. Nonpostural testing, such as the Valsalva maneuver, which may minimize the triggering of POTS symptoms, can be used prior to or in conjunction with the aforementioned techniques as a potential indicator of orthostatic intolerance, including POTS.

• #35 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Postural orthostatic tachycardia syndrome (POTS) is a common autonomic nervous system disorder characterized by an excessively fast heart rate and symptoms of lightheadedness upon standing. The current diagnostic criteria for POTS is a heart rate increase of 30 beats per minute (bpm) or more, or over 120 bpm, within the first 10 minutes of standing, in the absence of orthostatic hypotension. POTS is often diagnosed by a Tilt Table Test, but if such testing is not available, POTS can be diagnosed with bedside measurements of heart rate and blood pressure taken in the supine (laying down) and standing up position at 2, 5 and 10 minute intervals. This is called the Active Stand Test. Unfortunately, the Active Stand Test may miss some cases of POTS, so while it is appropriate to use to help diagnose POTS, caution should be used in ruling out POTS with an Active Stand Test when a patient has symptoms consistent with POTS.

• #36 POTS: Diagnosis and Management Guide for Nurses | NRR

  https://www.dovepress.com/postural-orthostatic-tachycardia-syndrome-diagnosis-and-management-gui-peer-reviewed-fulltext-article-NRR

  A 10-minute Active Stand Test can be easily performed in most clinical settings. […] A positive result, meeting criteria for POTS, is a sustained heart rate rise of 30 beats per minute in adults and 40 beats per minute in those aged 12-19 years and in the absence of orthostatic hypotension (drop in systolic blood pressure of 20 mmHg within 3 minutes of standing). […] Given the fluctuating nature of the condition, a negative Active Stand Test does not conclusively exclude a POTS diagnosis. […] The presence of extra-cardiac autonomic symptoms should prompt the clinician to maintain a high index of suspicion. […] A Head Up Tilt Table Test can be considered if it is deemed unsafe to perform the Active Stand Test or if the patient is unable to stand but is not required for diagnosis.

• #37 POTS: Causes, Symptoms, Diagnosis & Treatment

  https://my.clevelandclinic.org/health/diseases/16560-postural-orthostatic-tachycardia-syndrome-pots

  Postural orthostatic tachycardia syndrome (POTS) is a condition that causes your heart to beat faster than normal when you transition from sitting or lying down to standing up. Its a type of orthostatic intolerance. […] POTS can be difficult for healthcare providers to diagnose due to the many symptoms that can occur over time. People with POTS may have symptoms for months to years before finally being diagnosed with the condition. […] A tilt table test is the main way providers diagnose POTS. The tilt table test measures your heart rate and blood pressure as you change posture and position. […] Besides the tilt table test, your provider may order other tests to help confirm a POTS diagnosis or rule out other possible causes of your symptoms, including: Blood and urine tests for causes of POTS and conditions that mimic POTS.

• #38 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #39 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #40 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #41 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #42 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #43 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #44 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #45 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #46 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #47 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #48 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #49 Postural Orthostatic Tachycardia Syndrome (POTS) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/p/postural-orthostatic-tachycardia-syndrome-pots.html

  POTS is distinguished from other OI syndromes by a rapid increase in the heartbeat of more than 30 beats per minute, or a heart rate that exceeds 120 beats per minute within 10 minutes of standing. […] Diagnosis of POTS will generally begin with the physician taking a medical history and performing a physical exam. During the physical exam, the physician may perform a tilt table study to evaluate the heart and blood pressure when the body changes positions. Based on the tilt table test and the patient’s symptoms, an accurate diagnosis can often be made. […] In some instances, the physician may order additional tests to rule out other conditions. These diagnostic tests may examine the heart muscle, the blood flow through the heart, and any potential abnormal electrical impulses. An electrocardiogram (EKG) is a painless procedure that provides a picture of the electrical activity of the heart and how the heart is working.

• #50 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  The evaluation of a patient with POTS starts with a detailed history and physical examination looking for common features outlined above. […] A routine CBC and electrolyte panel can exclude severe anemia or gross electrolyte disturbances. […] An electrocardiogram should be routinely performed to exclude the presence of an accessory bypass tract or other abnormalities of cardiac conduction. […] Left ventricular function must be normal for a diagnosis of POTS. […] Other testing may be reserved for referral centers. […] The initial pharmacological approach is to withdraw medications that might be predisposing to tachycardia (such as diuretics, vasodilators, and norepinephrine transporter blockers). […] The use of pharmacological agents should not be viewed as a replacement for an exercise program, but as an adjunct to an exercise program.

• #51 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  The evaluation of a patient with POTS starts with a detailed history and physical examination looking for common features outlined above. […] A routine CBC and electrolyte panel can exclude severe anemia or gross electrolyte disturbances. […] An electrocardiogram should be routinely performed to exclude the presence of an accessory bypass tract or other abnormalities of cardiac conduction. […] Left ventricular function must be normal for a diagnosis of POTS. […] Other testing may be reserved for referral centers. […] The initial pharmacological approach is to withdraw medications that might be predisposing to tachycardia (such as diuretics, vasodilators, and norepinephrine transporter blockers). […] The use of pharmacological agents should not be viewed as a replacement for an exercise program, but as an adjunct to an exercise program.

• #52

  https://www.healthychildren.org/English/health-issues/conditions/heart/Pages/Postural-Orthostatic-Tachycardia-Syndrome-POTS.aspx

  Postural Orthostatic Tachycardia Syndrome (POTS) is a condition caused by a problem with the way the nerves regulate blood flow. […] POTS often starts around the time of puberty but can develop at any age. […] A thorough history and physical exam are the keys to help your child’s doctor make the diagnosis of POTS. […] Orthostatic vital sign measurements including the Active Stand Test are very helpful: the child’s heart rate and blood pressure are measured first while lying down, then sitting, and then while standing for 2, 5 and 10 minutes. […] Electrocardiogram (ECG) is used to rule out other heart problems that can cause racing heart beats. […] A team of specialists may be involved in managing this multi-system disorder. […] Medications are typically considered only for those patients who still have significant symptoms even after trying the above changes in hydration, sleep and exercise. […] Referral to a pediatric cardiologist or neurologist with expertise in POTS is recommended if medications are needed.

• #53 Postural Orthostatic Tachycardia Syndrome (POTS) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/p/postural-orthostatic-tachycardia-syndrome-pots.html

  Another diagnostic tool that could be used is an echocardiogram. This noninvasive procedure uses a machine called a transducer that transmits sound waves and bounces them off the heart and back into the transducer. These echoes are then translated into visual images. […] Electrophysiology studies may also be used to look at the electrical system of the heart.

• #54 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  The evaluation of a patient with POTS starts with a detailed history and physical examination looking for common features outlined above. […] A routine CBC and electrolyte panel can exclude severe anemia or gross electrolyte disturbances. […] An electrocardiogram should be routinely performed to exclude the presence of an accessory bypass tract or other abnormalities of cardiac conduction. […] Left ventricular function must be normal for a diagnosis of POTS. […] Other testing may be reserved for referral centers. […] The initial pharmacological approach is to withdraw medications that might be predisposing to tachycardia (such as diuretics, vasodilators, and norepinephrine transporter blockers). […] The use of pharmacological agents should not be viewed as a replacement for an exercise program, but as an adjunct to an exercise program.

• #55 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #56 Understanding POTS: Symptoms, diagnosis and treatment

  https://www.topdoctors.co.uk/medical-articles/understanding-pots-symptoms-diagnosis-and-treatment

  The postural orthostatic tachycardia syndrome (POTS) is one of the most common disorders of the autonomic nervous system. […] How is POTS diagnosed? Doctors will assess the clinical history and perform a physical examination, which should include the recording of the blood pressure and heart rate in the seated and standing position. A 12-lead ECG will be arranged and a 24-hour Holter ECG monitor may be helpful to assess the heart rate an any arrhythmias during a normal day. A Tilt table test may also be useful. […] For the diagnosis of POTS, the heart rate should increase for at least 30 beats/min within 10 minutes of standing and the blood pressure should not drop significantly. Conditions that may cause a fast heart rate such as anaemia or thyroid problems should be ruled out.

• #57 Postural Orthostatic Tachycardia Syndrome (POTS) | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/p/postural-orthostatic-tachycardia-syndrome-pots.html

  Another diagnostic tool that could be used is an echocardiogram. This noninvasive procedure uses a machine called a transducer that transmits sound waves and bounces them off the heart and back into the transducer. These echoes are then translated into visual images. […] Electrophysiology studies may also be used to look at the electrical system of the heart.

• #58 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Doctors may perform more detailed tests to evaluate the autonomic nervous system in POTS patients, such as Quantitative Sudomotor Axon Reflex Test (QSART, sometimes called Q-Sweat), Thermoregulatory Sweat Test (TST), skin biopsies looking at the small fiber nerves, gastric motility studies and more.

• #59 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #60 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Doctors may perform more detailed tests to evaluate the autonomic nervous system in POTS patients, such as Quantitative Sudomotor Axon Reflex Test (QSART, sometimes called Q-Sweat), Thermoregulatory Sweat Test (TST), skin biopsies looking at the small fiber nerves, gastric motility studies and more.

• #61 POTS: Types, Symptoms, Causes, Diagnosis, Risk & Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/postural-orthostatic-tachycardia

  Blood tests to check your kidneys, liver, and thyroid gland and to rule out other causes […] EKG and echocardiogram to see how well your heart is working […] Quantitative sudomotor axon reflex test to test the nerves that control sweating […] Valsalva maneuver to check the nerves that control your heart; you breathe out strongly through your mouth while holding your nose closed […] Autonomic breathing test to measure your blood flow and pressure during exercise […] Nerve biopsy to take a tiny sample of nerve fibers for analysis under a microscope. This is a minimally invasive procedure that goes about one-eighth of an inch into your skin.

• #62 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Doctors may perform more detailed tests to evaluate the autonomic nervous system in POTS patients, such as Quantitative Sudomotor Axon Reflex Test (QSART, sometimes called Q-Sweat), Thermoregulatory Sweat Test (TST), skin biopsies looking at the small fiber nerves, gastric motility studies and more.

• #63 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #64 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Doctors may perform more detailed tests to evaluate the autonomic nervous system in POTS patients, such as Quantitative Sudomotor Axon Reflex Test (QSART, sometimes called Q-Sweat), Thermoregulatory Sweat Test (TST), skin biopsies looking at the small fiber nerves, gastric motility studies and more.

• #65 POTS: Types, Symptoms, Causes, Diagnosis, Risk & Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/postural-orthostatic-tachycardia

  Blood tests to check your kidneys, liver, and thyroid gland and to rule out other causes […] EKG and echocardiogram to see how well your heart is working […] Quantitative sudomotor axon reflex test to test the nerves that control sweating […] Valsalva maneuver to check the nerves that control your heart; you breathe out strongly through your mouth while holding your nose closed […] Autonomic breathing test to measure your blood flow and pressure during exercise […] Nerve biopsy to take a tiny sample of nerve fibers for analysis under a microscope. This is a minimally invasive procedure that goes about one-eighth of an inch into your skin.

• #66 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #67 Postural orthostatic tachycardia syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000308

  1st tests to order include ECG, CBC, thyroid function tests, electrolytes, and morning serum cortisol. […] Tests to consider include Holter monitor, echocardiogram, tilt-table test, supine and upright plasma epinephrine and norepinephrine levels, thermoregulatory sweat test, quantitative sudomotor axon reflex test, Valsalva maneuver, deep breathing test, and exercise testing.

• #68 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  https://www.dysautonomiainternational.org/page.php?ID=30

  Doctors may perform more detailed tests to evaluate the autonomic nervous system in POTS patients, such as Quantitative Sudomotor Axon Reflex Test (QSART, sometimes called Q-Sweat), Thermoregulatory Sweat Test (TST), skin biopsies looking at the small fiber nerves, gastric motility studies and more.

• #69 Symptom presentation by phenotype of postural orthostatic tachycardia syndrome | Scientific Reports

  https://www.nature.com/articles/s41598-023-50886-8

  Postural orthostatic tachycardia syndrome (POTS) presents heterogeneously and is diagnosed when appropriate symptoms are present in conjunction with a heart rate increase of at least 30 beats-per-minute upon standing without orthostatic hypotension. […] POTS is defined by a 30 beat-per-minute (bpm) or more increase in heart rate within 10 min upon upright tilt, in the absence of orthostatic hypotension. This may be diagnosed by an active stand test using a sphygmomanometer, or a head-up-tilt test (HUTT). Associated symptoms must be present as well to meet the diagnosis. […] Phenotype determination in POTS patients is sought in an effort to tailor treatment based on underlying pathophysiology. […] These phenotypes are not mutually exclusive and all lead to the symptoms experienced by patients in POTS.

• #70 Symptom presentation by phenotype of postural orthostatic tachycardia syndrome | Scientific Reports

  https://www.nature.com/articles/s41598-023-50886-8

  However, the treatment response in POTS is highly heterogenous. […] As phenotypes cannot be distinguished by symptoms alone, clinicians should seek further testing if phenotyping is pursued, including a 24-h urine sodium for hypovolemic POTS, supine and standing catecholamines and SBP rise on HUTT for hyperadrenergic POTS, and skin biopsy or QSART with reflex to TST for neuropathic POTS. […] Future research should be aimed at these measures, to achieve better phenotyping, and in turn potentially tailor treatment.

• #71 Symptom presentation by phenotype of postural orthostatic tachycardia syndrome | Scientific Reports

  https://www.nature.com/articles/s41598-023-50886-8

  However, the treatment response in POTS is highly heterogenous. […] As phenotypes cannot be distinguished by symptoms alone, clinicians should seek further testing if phenotyping is pursued, including a 24-h urine sodium for hypovolemic POTS, supine and standing catecholamines and SBP rise on HUTT for hyperadrenergic POTS, and skin biopsy or QSART with reflex to TST for neuropathic POTS. […] Future research should be aimed at these measures, to achieve better phenotyping, and in turn potentially tailor treatment.

• #72 Tests and Diagnosis | PoTS UK

  https://www.potsuk.org/about-pots/diagnosis/

  Blood tests are taken to rule out other conditions. These may include: full blood count, kidney function, ferritin, vitamin B12, folic acid levels, thyroid tests, morning cortisol levels (to rule out poorly functioning adrenal glands), glucose, vitamin D, Coeliac screen (to check for Coeliac disease). […] Blood can also be taken for norepinephrine whilst lying and then standing (or when upright on the tilt table); if levels exceed 600 picogram/millilitre, it may suggest hyperadrenergic PoTS.

• #73 Symptom presentation by phenotype of postural orthostatic tachycardia syndrome | Scientific Reports

  https://www.nature.com/articles/s41598-023-50886-8

  However, the treatment response in POTS is highly heterogenous. […] As phenotypes cannot be distinguished by symptoms alone, clinicians should seek further testing if phenotyping is pursued, including a 24-h urine sodium for hypovolemic POTS, supine and standing catecholamines and SBP rise on HUTT for hyperadrenergic POTS, and skin biopsy or QSART with reflex to TST for neuropathic POTS. […] Future research should be aimed at these measures, to achieve better phenotyping, and in turn potentially tailor treatment.

• #74 Symptom presentation by phenotype of postural orthostatic tachycardia syndrome | Scientific Reports

  https://www.nature.com/articles/s41598-023-50886-8

  However, the treatment response in POTS is highly heterogenous. […] As phenotypes cannot be distinguished by symptoms alone, clinicians should seek further testing if phenotyping is pursued, including a 24-h urine sodium for hypovolemic POTS, supine and standing catecholamines and SBP rise on HUTT for hyperadrenergic POTS, and skin biopsy or QSART with reflex to TST for neuropathic POTS. […] Future research should be aimed at these measures, to achieve better phenotyping, and in turn potentially tailor treatment.

• #75 POTS-associated Conditions and Management Strategies | USC Journal

  https://www.uscjournal.com/articles/narrative-review-postural-orthostatic-tachycardia-syndrome-associated-conditions-and?language_content_entity=en

  Postural orthostatic tachycardia syndrome (POTS) is a heterogeneous disorder that presents with positional tachycardia and a constellation of other symptoms. […] Diagnosis of POTS is often delayed due to a clinical presentation that includes a constellation of non-specific symptoms. […] A complete history and physical examination are critical components of diagnosing POTS, and should focus on the chronicity of symptoms, potential triggers, family history, patient diet and exercise history, and modifying factors. […] Diagnosis of POTS requires ruling out other conditions with similar presentations, including thyroid disorders, adrenal gland disorders, anemia, iron deficiency, and electrolyte abnormalities, among many others. […] Initial workup should include orthostatic blood pressure and heart rate measurements at 2-, 5-, and 10-minute intervals and a comprehensive physical examination including evaluation for lower extremity venous pooling and joint hypermobility. […] Treatment regimens are extremely patient specific and primarily focus on symptom improvement and gradual exercise tolerance.

• #76 POTS: Postural Orthostatic Tachycardia Syndrome

  https://www.myamericannurse.com/postural-orthostatic-tachycardia-syndrome-2/

  Diagnosing POTS presents challenges because symptoms affect a wide range of body systems and may mimic other conditions, such as chronic fatigue syndrome, fibromyalgia, Ehlers-Danlos syndrome, vasovagal syncope, anxiety, panic disorder, or inflammatory bowel disease. […] POTS may be suspected if all of the following criteria are met when performing the head-up tilt table test: Abnormal increase in HR when changing to an upright position (30 bpm within 10 minutes). […] POTS diagnosis also should be considered if orthostatic intolerance symptoms last more than 6 months and when symptoms improve after returning to a recumbent position. […] Currently, no Food and Drug Administration approved POTS treatments exist. […] However, depending on the subtype and symptoms, some medications may be beneficial. […] Prognosis for patients with POTS varies.

• #77 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments […] POTS is defined as the presence of chronic symptoms of orthostatic intolerance (6 months) accompanied by an increased heart rate (HR) 30 bpm within 10 minutes of assuming an upright posture and in the absence of orthostatic hypotension (blood pressure [BP] fall 20/10 mmHg). […] Morning postural assessments will optimize diagnostic sensitivity (at the expense of specificity) for POTS. […] The orthostatic tachycardia must occur in the absence of other overt causes of orthostatic tachycardia (e.g., acute blood loss), medications that impair autonomic regulation, or other chronic debilitating disorders that might cause tachycardia (e.g., anemia, diabetes with known autonomic neuropathy, systemic infectious or inflammatory conditions, hyperthyroidism).

• #78 POTS: Causes, Symptoms, Diagnosis & Treatment

  https://my.clevelandclinic.org/health/diseases/16560-postural-orthostatic-tachycardia-syndrome-pots

  Postural orthostatic tachycardia syndrome (POTS) is a condition that causes your heart to beat faster than normal when you transition from sitting or lying down to standing up. Its a type of orthostatic intolerance. […] POTS can be difficult for healthcare providers to diagnose due to the many symptoms that can occur over time. People with POTS may have symptoms for months to years before finally being diagnosed with the condition. […] A tilt table test is the main way providers diagnose POTS. The tilt table test measures your heart rate and blood pressure as you change posture and position. […] Besides the tilt table test, your provider may order other tests to help confirm a POTS diagnosis or rule out other possible causes of your symptoms, including: Blood and urine tests for causes of POTS and conditions that mimic POTS.

• #79 Navigating Diagnosis, Treatment, and Care Management in Postural Orthostatic Tachycardia Syndrome

  https://www.ajmc.com/view/navigating-diagnosis-treatment-and-care-management-in-postural-orthostatic-tachycardia-syndrome

  Understanding postural orthostatic tachycardia syndrome is important in order to improve prevention and outcomes. […] Diagnosing POTS can be challenging due to its wide range of symptoms, which often overlap with other conditions like anxiety, chronic fatigue, or dehydration. Many patients endure months or even years of unexplained symptoms before receiving a proper diagnosis. Health care providers typically begin by reviewing symptoms, medications, and medical history, followed by a physical exam. The tilt table test is the gold standard for diagnosing POTS, as it monitors heart rate and blood pressure changes when transitioning from lying down to standing. Additional tests, such as blood and urine analyses, autonomic function tests, and imaging like echocardiograms, may help confirm POTS or rule out other conditions. The diagnostic process can be lengthy and complex due to the lack of widespread awareness and the need for specialized testing, which delays treatment and exacerbates patients physical and emotional challenges. […] Understanding POTS is key to managing this often overlooked but life-altering condition. Greater awareness, research, and early intervention are essential to improving outcomes for those affected.

• #80 Postural orthostatic tachycardia syndrome – Wikipedia

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

  POTS is most commonly diagnosed by a cardiologist (41%), cardiac electrophysiologist (15%), or neurologist (19%). The average number of physicians seen before receiving diagnosis is seven, and the average delay before diagnosis is 4.7 years. […] A POTS diagnosis requires the following characteristics: For patients age 20 or older, a sustained increase in heart rate 30 bpm within ten minutes of upright posture (tilt table test or standing) from a supine position. For patients age 12-19, heart rate increase must be 40 bpm. Associated with frequent symptoms of lightheadedness, palpitations, tremulousness, generalized weakness, blurred vision, or fatigue that are worse with upright posture and that improve with recumbence. An absence of orthostatic hypotension (i.e., no sustained systolic blood pressure drop of 20 mmHg or more). Chronic symptoms that have lasted for longer than three months. In the absence of other disorders, medications, or functional states that are known to predispose to orthostatic tachycardia.

• #81 POTS: Diagnosing and treating this dizzying syndrome – Harvard Health

  https://www.health.harvard.edu/blog/pots-diagnosing-and-treating-this-dizzying-syndrome-202110062611

  Most of us don’t think twice about standing up. Yet for people affected by a disorder called postural orthostatic tachycardia syndrome (POTS), the simple act of standing can provoke lightheadedness and a racing heartbeat. This post discusses diagnosis, treatment, and living with POTS. […] Measuring blood pressure and heart rate while lying down, then while standing (orthostatic vital signs), can help cardiologists like me diagnose POTS. Within 10 minutes of standing, the heart rate rises at least 30 beats per minute (bpm) in POTS and, importantly, the blood pressure remains stable (systolic blood pressure drops by no more than 20 mm Hg). […] These findings, along with symptoms of orthostatic intolerance (most commonly lightheadedness and fatigue), must be present for at least three to six months for a person to be diagnosed with POTS. Because many doctors are not familiar with POTS, and since there is no laboratory test to confirm it, people often experience symptoms for several years before being diagnosed.

• #82 POTS: Diagnosis and Management Guide for Nurses | NRR

  https://www.dovepress.com/postural-orthostatic-tachycardia-syndrome-diagnosis-and-management-gui-peer-reviewed-fulltext-article-NRR

  A 10-minute Active Stand Test can be easily performed in most clinical settings. […] A positive result, meeting criteria for POTS, is a sustained heart rate rise of 30 beats per minute in adults and 40 beats per minute in those aged 12-19 years and in the absence of orthostatic hypotension (drop in systolic blood pressure of 20 mmHg within 3 minutes of standing). […] Given the fluctuating nature of the condition, a negative Active Stand Test does not conclusively exclude a POTS diagnosis. […] The presence of extra-cardiac autonomic symptoms should prompt the clinician to maintain a high index of suspicion. […] A Head Up Tilt Table Test can be considered if it is deemed unsafe to perform the Active Stand Test or if the patient is unable to stand but is not required for diagnosis.

• #83 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments […] POTS is defined as the presence of chronic symptoms of orthostatic intolerance (6 months) accompanied by an increased heart rate (HR) 30 bpm within 10 minutes of assuming an upright posture and in the absence of orthostatic hypotension (blood pressure [BP] fall 20/10 mmHg). […] Morning postural assessments will optimize diagnostic sensitivity (at the expense of specificity) for POTS. […] The orthostatic tachycardia must occur in the absence of other overt causes of orthostatic tachycardia (e.g., acute blood loss), medications that impair autonomic regulation, or other chronic debilitating disorders that might cause tachycardia (e.g., anemia, diabetes with known autonomic neuropathy, systemic infectious or inflammatory conditions, hyperthyroidism).

• #84 Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments

  https://www.acc.org/Latest-in-Cardiology/Articles/2016/01/25/14/01/Postural-Tachycardia-Syndrome-POTS-Diagnosis-and-Treatment-Basics-and-New-Developments

  Postural Tachycardia Syndrome (POTS) Diagnosis and Treatment: Basics and New Developments […] POTS is defined as the presence of chronic symptoms of orthostatic intolerance (6 months) accompanied by an increased heart rate (HR) 30 bpm within 10 minutes of assuming an upright posture and in the absence of orthostatic hypotension (blood pressure [BP] fall 20/10 mmHg). […] Morning postural assessments will optimize diagnostic sensitivity (at the expense of specificity) for POTS. […] The orthostatic tachycardia must occur in the absence of other overt causes of orthostatic tachycardia (e.g., acute blood loss), medications that impair autonomic regulation, or other chronic debilitating disorders that might cause tachycardia (e.g., anemia, diabetes with known autonomic neuropathy, systemic infectious or inflammatory conditions, hyperthyroidism).

• #85 Diagnosis and management of postural orthostatic tachycardia syndrome

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8920526/

  The patients heart rate should rise by at least 30 beats/min (or 40 beats/min if patient is aged 12-19 yr) in at least 2 measurements taken at least 1 minute apart. […] If a clinician has a high suspicion of POTS, but a patient does not meet the criterion for orthostatic tachycardia at their initial evaluation, reassessment at a later date is prudent, preferably in the morning. […] Postural orthostatic tachycardia syndrome is one of the most common disorders of the autonomic nervous system, with an estimated prevalence of 0.1%-1%. […] Postural orthostatic tachycardia syndrome does not have a cure. Treatment goals include patient education, symptom suppression, improved physical conditioning and enhanced quality of life. […] Pharmacologic treatments should be considered if patients have severe symptoms at initial presentation or are still symptomatic after nonpharmacologic strategies have been tried.

• #86 POTS: Diagnosis and Management Guide for Nurses | NRR

  https://www.dovepress.com/postural-orthostatic-tachycardia-syndrome-diagnosis-and-management-gui-peer-reviewed-fulltext-article-NRR

  A 10-minute Active Stand Test can be easily performed in most clinical settings. […] A positive result, meeting criteria for POTS, is a sustained heart rate rise of 30 beats per minute in adults and 40 beats per minute in those aged 12-19 years and in the absence of orthostatic hypotension (drop in systolic blood pressure of 20 mmHg within 3 minutes of standing). […] Given the fluctuating nature of the condition, a negative Active Stand Test does not conclusively exclude a POTS diagnosis. […] The presence of extra-cardiac autonomic symptoms should prompt the clinician to maintain a high index of suspicion. […] A Head Up Tilt Table Test can be considered if it is deemed unsafe to perform the Active Stand Test or if the patient is unable to stand but is not required for diagnosis.

• #87 POTS: Diagnosis and Management Guide for Nurses | NRR

  https://www.dovepress.com/postural-orthostatic-tachycardia-syndrome-diagnosis-and-management-gui-peer-reviewed-fulltext-article-NRR

  A 10-minute Active Stand Test can be easily performed in most clinical settings. […] A positive result, meeting criteria for POTS, is a sustained heart rate rise of 30 beats per minute in adults and 40 beats per minute in those aged 12-19 years and in the absence of orthostatic hypotension (drop in systolic blood pressure of 20 mmHg within 3 minutes of standing). […] Given the fluctuating nature of the condition, a negative Active Stand Test does not conclusively exclude a POTS diagnosis. […] The presence of extra-cardiac autonomic symptoms should prompt the clinician to maintain a high index of suspicion. […] A Head Up Tilt Table Test can be considered if it is deemed unsafe to perform the Active Stand Test or if the patient is unable to stand but is not required for diagnosis.

• #88 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  http://www.dysautonomiainternational.org/page.php?ID=30

  While the diagnostic criteria focus on the abnormal heart rate increase upon standing, POTS usually presents with symptoms much more complex than a simple increase in heart rate. […] Physicians with expertise in treating POTS have compared the functional impairment seen in POTS patients to the impairment seen in chronic obstructive pulmonary disease (COPD) or congestive heart failure. […] The longest follow-up study done to date comes from Mayo Clinic. Mayo Clinic did a survey of their pediatric POTS patients seen between 2003 and 2010. Of those who responded to the survey, 18.2% reported a complete resolution of their POTS symptoms, while 52.8% reported persistent but improved symptoms.

• #89 POTS-associated Conditions and Management Strategies | USC Journal

  https://www.uscjournal.com/articles/narrative-review-postural-orthostatic-tachycardia-syndrome-associated-conditions-and?language_content_entity=en

  Postural orthostatic tachycardia syndrome (POTS) is a heterogeneous disorder that presents with positional tachycardia and a constellation of other symptoms. […] Diagnosis of POTS is often delayed due to a clinical presentation that includes a constellation of non-specific symptoms. […] A complete history and physical examination are critical components of diagnosing POTS, and should focus on the chronicity of symptoms, potential triggers, family history, patient diet and exercise history, and modifying factors. […] Diagnosis of POTS requires ruling out other conditions with similar presentations, including thyroid disorders, adrenal gland disorders, anemia, iron deficiency, and electrolyte abnormalities, among many others. […] Initial workup should include orthostatic blood pressure and heart rate measurements at 2-, 5-, and 10-minute intervals and a comprehensive physical examination including evaluation for lower extremity venous pooling and joint hypermobility. […] Treatment regimens are extremely patient specific and primarily focus on symptom improvement and gradual exercise tolerance.

• #90 Autoimmunity and postural orthostatic tachycardia syndrome: Implications in diagnosis and management | Cleveland Clinic Journal of Medicine

  https://www.ccjm.org/content/90/7/439

  Postural orthostatic tachycardia syndrome (POTS) sustained tachycardia upon standing without orthostatic hypotension can be diagnosed clinically without an extensive diagnostic evaluation unless certain atypical features suggest an alternative diagnosis. […] Atypical features are important to recognize and may suggest an alternative diagnosis. […] The diagnostic evaluation of POTS starts with a focused history centering on symptom onset and progression, comorbid conditions, precipitating and exacerbating factors, and positional dependence. […] Basic laboratory testing should include a complete blood cell count, electrolytes, and thyroid function testing. […] When red-flag features are present, systemic testing, neurologic testing, or both may be warranted. […] The overlap of signs and symptoms among several of these autoimmune conditions and POTS has raised the possibility of an underlying autoimmune mechanism in the disease itself.

• #91 Postural Orthostatic Tachycardia Syndrome

  https://practicalneurology.com/diseases-diagnoses/imaging-testing/postural-orthostatic-tachycardia-syndrome/31643/

  POTS is a clinically defined syndrome with many possible symptoms that relate to dysfunction of the autonomic nervous system. […] The main symptoms of POTS are related to intolerance of upright posture (eg, standing, prolonged sitting). […] Consensus diagnostic criteria for POTS were developed by the American Rhythm Society in 2015. Diagnosis should be considered based on symptoms present, including an increase in heart rate of 30 beats per minute (bpm) when moving from lying to standing (or 40 bpm in individuals age 12-19 years); and the absence of orthostatic hypotension (20 mm Hg drop in systolic blood pressure). […] A clinical diagnosis of POTS is appropriate if the symptoms and cardiovascular criteria are fulfilled. […] The diagnosis of POTS, which is clinical and does not require ancillary testing, should be considered in individuals presenting with these symptoms.

• #92 POTS: Postural Orthostatic Tachycardia Syndrome

  https://www.myamericannurse.com/postural-orthostatic-tachycardia-syndrome-2/

  Early diagnosis and treatment can help ensure good outcomes. […] Postural orthostatic tachycardia syndrome (POTS) is characterized by too little blood return to the heart when moving from a lying or sitting to a standing position, resulting in a range of symptoms. […] POTS has various underlying causes, making diagnosis and treatment difficult. […] The provider suspects that the patient may be suffering from postural orthostatic tachycardia syndrome (POTS) as a result of COVID-19, but must conduct additional diagnostic tests before making any conclusions and determining treatment options. […] Results from a complete blood count, comprehensive metabolic panel, and thyroid profile are unremarkable. […] The provider orders a head-up tilt table test. The results include a rapid increase in heart rate and dizziness, suggesting that Ms. Watson suffers from POTS.

• #93 POTS: Postural Orthostatic Tachycardia Syndrome

  https://www.myamericannurse.com/postural-orthostatic-tachycardia-syndrome-2/

  Diagnosing POTS presents challenges because symptoms affect a wide range of body systems and may mimic other conditions, such as chronic fatigue syndrome, fibromyalgia, Ehlers-Danlos syndrome, vasovagal syncope, anxiety, panic disorder, or inflammatory bowel disease. […] POTS may be suspected if all of the following criteria are met when performing the head-up tilt table test: Abnormal increase in HR when changing to an upright position (30 bpm within 10 minutes). […] POTS diagnosis also should be considered if orthostatic intolerance symptoms last more than 6 months and when symptoms improve after returning to a recumbent position. […] Currently, no Food and Drug Administration approved POTS treatments exist. […] However, depending on the subtype and symptoms, some medications may be beneficial. […] Prognosis for patients with POTS varies.

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