The neuropathic postural tachycardia syndrome
Open accessAbstract
BACKGROUND: The postural tachycardia syndrome is a common disorder that is characterized by chronic orthostatic symptoms and a dramatic increase in heart rate on standing, but that does not involve orthostatic hypotension. Several lines of evidence indicate that this disorder may result from sympathetic denervation of the legs. METHODS: We measured norepinephrine spillover (the rate of entry of norepinephrine into the venous circulation) in the arms and legs both before and in response to exposure to three stimuli (the cold pressor test, sodium nitroprusside infusion, and tyramine infusion) in 10 patients with the postural tachycardia syndrome and in 8 age- and sex-matched normal subjects. RESULTS: At base line, the mean (+/-SD) plasma norepinephrine concentration in the femoral vein was lower in the patients with the postural tachycardia syndrome than in the normal subjects (135+/-30 vs. 215+/-55 pg per milliliter [0.80+/-0.18 vs. 1.27+/-0.32 nmol per liter], P=0.001). Norepinephrine spillover in the arms increased to a similar extent in the two groups in response to each of the three stimuli, but the increases in the legs were smaller in the patients with the postural tachycardia syndrome than in the normal subjects (0.001+/-0.09 vs. 0.12+/-0.12 ng per minute per deciliter of tissue [0.006+/-0.53 vs. 0.71+/-0.71 nmol per minute per deciliter] with the cold pressor test, P=0.02; 0.02+/-0.07 vs. 0.23+/-0.17 ng per minute per deciliter [0.12+/-0.41 vs. 1.36+/-1.00 nmol per minute per deciliter] with nitroprusside infusion, P=0.01; and 0.008+/-0.09 vs. 0.19+/-0.25 ng per minute per deciliter [0.05+/-0.53 vs. 1.12+/-1.47 nmol per minute per deciliter] with tyramine infusion, P=0.04). CONCLUSIONS: The neuropathic postural tachycardia syndrome results from partial sympathetic denervation, especially in the legs.
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Impaired sympathetic tone reduces venoconstriction, causing venous pooling in the lower limbs and splanchnic beds.
“It is believed that impaired sympathetic tone (as measured by norepinephrine spillover) reduces venoconstriction, leading to venous pooling in the lower limbs and splanchnic beds.24”
From 2015 Heart Rhythm Society Expert Consensus Statement on the Diagnosis and Treatment of Postural Tachycardia Syndrome, Inappropriate Sinus Tachycardia, and Vasovagal Syncope (2015) · cites this paper as [24]
The discussion (section 2.0; page unavailable) links impaired norepinephrine spillover to noradrenergic dysfunction in the legs and discusses minimizing orthostatic blood pooling in the lower body. It does not establish reduced venoconstriction or pooling in splanchnic beds; instead, it suggests that sympathetic neurons in organs such as the mesentery remain intact. (LLM, conf=0.86)
Experimental — accuracy not yet measuredFeatures described in subgroups of POTS patients include increased sympathetic nervous system tone (hyperadrenergic POTS), partial peripheral sympathetic denervation leading to relative central hypovolemia (neuropathic POTS), and low blood volume (absolute hypovolemia), which may drive some other hemodynamic findings.
“Features described in subgroups of patients include increased sympathetic nervous system tone (i.e., hyperadrenergic POTS),17 partial peripheral sympathetic denervation leading to relative central hypovolemia (i.e., neuropathic POTS)27 and low blood volume (i.e., absolute hypovolemia),28 which may drive some of the other hemodynamic findings.”
From Diagnosis and management of postural orthostatic tachycardia syndrome (2022) · cites this paper as [27]
Split into 2 atoms — 1 confirmed, 0 partially supported, 0 disputed, 0 misattributed, 0 unverifiable, 1 not checked. Expand the claim to see per-atom verdicts.
Experimental — accuracy not yet measuredMore commonly proposed causes of POTS include partial peripheral neuropathy, a deficit in blood volume, abnormalities in the renin-angiotensin-aldosterone system, physical deconditioning, autoantibodies targeting peripheral adrenergic receptors, and a hyperadrenergic state resulting from central activation of the sympathetic nervous system.
“More commonly proposed causes include partial peripheral neuropathy (“neuropathic POTS”),19 a deficit in blood volume, abnormalities in the renin-angiotensin-aldosterone system (RAAS)20, physical deconditioning,10 autoantibodies targeting peripheral adrenergic receptors21 and a hyperadrenergic state resulting from central activation of the sympathetic nervous system (“HyperPOTS”).”
From Hyperadrenergic Postural Tachycardia Syndrome: Clinical Biomarkers and Response to Guanfacine (2024) · cites this paper as [19]
Neuropathic POTS was first described when sympathetic activation increased norepinephrine spillover in the lower limbs of some patients less than in healthy controls, despite similar arm responses.
“Neuropathic POTS was first described when activation of the sympathetic nervous system increased norepinephrine spillover in the lower limbs of some patients to a lesser extent than in healthy controls, despite similar responses in the arms [42].”
From Postural tachycardia syndrome: beyond orthostatic intolerance (2015) · cites this paper as [42]
POTS patients have significantly impaired sympathetic nervous system activity in the lower extremities.
“Jacob et al. (18) demonstrated significantly impaired sympathetic nervous system activity in the lower extremities of POTS patients.”
From Postural orthostatic tachycardia syndrome: mechanisms and new therapies (2020) · cites this paper as [18]
Norepinephrine release at sympathetic nervous system synapses in the lower extremities in response to cold pressor test, nitroprusside infusion, and tyramine infusion was markedly lower in POTS patients than in healthy controls.
“Amounts of norepinephrine released at sympathetic nervous system synapses in the lower extremities in response to a cold pressor test, a nitroprusside infusion, and a tyramine infusion were markedly lower in POTS patients than in healthy controls.”
From Postural orthostatic tachycardia syndrome: mechanisms and new therapies (2020) · cites this paper as [18]
Norepinephrine release in the upper extremities in response to the same stimuli was no different between POTS patients and healthy controls.
“In contrast, the amounts of norepinephrine released in the upper extremities in response to the same stimuli were no different between POTS patients and healthy controls.”
From Postural orthostatic tachycardia syndrome: mechanisms and new therapies (2020) · cites this paper as [18]
Approximately 50% of POTS patients evaluated at tertiary care centers exhibit a neuropathic phenotype associated with partial sympathetic denervation, usually due to a distal small fiber neuropathy producing sympathetic denervation of the lower limbs.
“approximately 50% of POTS patients evaluated at tertiary care centers exhibit a neuropathic phenotype associated with partial sympathetic denervation, usually due to a distal small fiber neuropathy producing sympathetic denervation of the lower limbs”
From Postural tachycardia syndrome – Diagnosis, physiology, and prognosis (2018) · cites this paper as Jacob et al., 2000
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“It is believed that impaired sympathetic tone (as measured by norepinephrine spillover) reduces venoconstriction, leading to venous pooling in the lower limbs and splanchnic beds.(24) This neuropathic manifestation of POTS requires a high cardiac output to compensate for reduced splanchnic and peripheral resistance an…”
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The Postural Orthostatic Tachycardia Syndrome:
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“In tertiary referral center studies, a neuropathic etiology underlies POTS in 33 to 50% of individuals [6,8].”
BackgroundResultInfluentialPostural Orthostatic Tachycardia Syndrome (POTS): A critical assessment
Olshansky, B., Cannom, D. S., Fedorowski, A., Stewart, J. M., Gibbons, C. H., Sutton, R., Shen, W.-K., Muldowney, J. A. S., Chung, T., Feigofsky, S., et al. (2020) · Progress in Cardiovascular Diseases · doi:10.1016/j.pcad.2020.03.010 · Cited by 102 · see citing works
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Persistent splanchnic hyperemia during upright tilt in postural tachycardia syndrome
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Diagnosis and management of postural orthostatic tachycardia syndrome
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L‐Dihydroxyphenylserine (L‐DOPS): A Norepinephrine Prodrug
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Neuronal Source of Plasma Dopamine
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Postural Orthostatic Tachycardia Syndrome: Prevalence, Pathophysiology, and Management
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Neurohumoral and haemodynamic profile in postural tachycardia and chronic fatigue syndromes
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Self-citationDisorders of the Autonomic Nervous System
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Self-citationAdolescent Fatigue, POTS, and Recovery: A Guide for Clinicians
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A prospective, 1-year follow-up study of postural tachycardia syndrome
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Blood Volume Perturbations in the Postural Tachycardia Syndrome
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Self-citationSympathetic Nerve Activity in Response to Hypotensive Stress in the Postural Tachycardia Syndrome
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Orthostatic intolerance in pediatrics
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Small-fiber neuropathy with cardiac denervation in postural tachycardia syndrome
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Decreased Microvascular Nitric Oxide–Dependent Vasodilation in Postural Tachycardia Syndrome
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A review of postural orthostatic tachycardia syndrome
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Local vascular responses affecting blood flow in postural tachycardia syndrome
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Distal sudomotor findings in postural tachycardia syndrome
Peltier, A. C., Garland, E., Raj, S. R., Sato, K., Black, B., Song, Y., Wang, L., Biaggioni, I., Diedrich, A., & Robertson, D. (2010) · Clinical Autonomic Research · doi:10.1007/s10286-009-0045-y · Cited by 70 · see citing works
Self-citationBaroreflex control of muscle sympathetic nerve activity in postural orthostatic tachycardia syndrome
Muenter Swift, N., Charkoudian, N., Dotson, R. M., Suarez, G. A., & Low, P. A. (2005) · American Journal of Physiology-Heart and Circulatory Physiology · doi:10.1152/ajpheart.01243.2004 · Cited by 70 · see citing works
Cutaneous neuronal nitric oxide is specifically decreased in postural tachycardia syndrome
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Jordan, J., Shannon, J. R., Diedrich, A., Black, B. K., & Robertson, D. (2002) · Hypertension · doi:10.1161/hy1201.097202 · Cited by 69 · see citing works
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Reduced stroke volume during exercise in postural tachycardia syndrome
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Familial orthostatic tachycardia due to norepinephrine transporter deficiency
ROBERTSON, D., FLATTEM, N., TELLIOGLU, T., CARSON, R., GARLAND, E., SHANNON, J. R., JORDAN, J., JACOB, G., BLAKELY, R. D., & BIAGGIONI, I. (2001) · Annals of the New York Academy of Sciences · doi:10.1111/j.1749-6632.2001.tb03703.x · Cited by 64 · see citing works
Self-citationAbnormalities of angiotensin regulation in postural tachycardia syndrome
Mustafa, H. I., Garland, E. M., Biaggioni, I., Black, B. K., Dupont, W. D., Robertson, D., & Raj, S. R. (2011) · Heart Rhythm · doi:10.1016/j.hrthm.2010.11.009 · Cited by 62 · see citing works
Self-citationLimb venous compliance in patients with idiopathic orthostatic intolerance and postural tachycardia
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Postural Tachycardia Syndrome in Children and Adolescents
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Acetylcholinesterase Inhibition in Patients With Orthostatic Intolerance
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Cerebral Autoregulation in Orthostatic Intolerance
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Self-citationPostural Tachycardia Syndrome (POTS) and the GI Tract: A Primer for the Gastroenterologist
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Epigenetic Modification of the Norepinephrine Transporter Gene in Postural Tachycardia Syndrome
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Gastrointestinal symptoms in postural tachycardia syndrome: a systematic review
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Sympathetic dysfunction in vasovagal syncope and the postural orthostatic tachycardia syndrome
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Neuronal and hormonal perturbations in postural tachycardia syndrome
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Gynecologic disorders and menstrual cycle lightheadedness in postural tachycardia syndrome
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“Associated features include increased sympathetic tone (reflected by elevated levels of norepinephrine) [7–9], partial autonomic neuropathy [10], and low blood volume [11].”
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Vagal and Sympathetic Function in Neuropathic Postural Tachycardia Syndrome
Jacob, G., Diedrich, L., Sato, K., Brychta, R. J., Raj, S. R., Robertson, D., Biaggioni, I., & Diedrich, A. (2019) · Hypertension · doi:10.1161/hypertensionaha.118.11803 · Cited by 51 · see citing works
Self-citationGastric emptying in postural tachycardia syndrome: a preliminary report
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Sinus tachyarrhythmias and the specific bradycardic agents: a marriage made in heaven?
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Quantitative assessment of autonomic symptom burden in Postural tachycardia syndrome (POTS)
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Self-citationMicrovascular Filtration Is Increased in Postural Tachycardia Syndrome
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Gastrointestinal dysfunction in postural tachycardia syndrome
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Self-citationReflex vascular defects in the orthostatic tachycardia syndrome of adolescents
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Orthostatic Intolerance and Gastrointestinal Motility in Adolescents With Nausea and Abdominal Pain
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Quesnel, D. A., Cooper, M., Fernández-del-Valle, M., Reilly, A., & Calogero, R. M. (2023) · Journal of Eating Disorders · doi:10.1186/s40337-022-00685-9 · Cited by 49 · see citing works
- Authors
- Jacob, G., Costa, F., Shannon, J. R., Robertson, R. M., Wathen, M., Stein, M., Biaggioni, I., Ertl, A., Black, B., & Robertson, D.
- Affiliations
- Vanderbilt University (US)
- Venue
- New England Journal of Medicine
- Publisher
- Massachusetts Medical Society
- Published
- 2000-10-05
- Volume
- 343
- Issue
- 14
- Pages
- 1008-1014
- ISSN
- 0028-4793 (ISSN-L)
- 1533-4406
- OpenAlex
- W2323218437
- Semantic Scholar
- 407efaeed6a32a863bb8fc0e44db81b5b8d4944b
- Cited by
- 398
- References
- 40
- Citations by year
- 2026: 9 · 2025: 16 · 2024: 12 · 2023: 14 · 2022: 16 · 2021: 13 · 2020: 19 · 2019: 9 · 2018: 14 · 2017: 14 · 2016: 10 · 2015: 11 · 2014: 21 · 2013: 16 · 2012: 16
- FWCI
- 20.53
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- New England Journal of Medicine (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Aeronautics and Space Administration
- Vanderbilt University
- National Institutes of Health
- National Heart, Lung, and Blood Institute (HL56693, P01HL056693)
- National Center for Research Resources (RR00095)
- Topics
- Health Sciences › Medicine › Surgery › Cardiovascular Syncope and Autonomic Disorders
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
- Keywords
- postural orthostatic tachycardia syndrome, sympathetic denervation, norepinephrine spillover, plasma norepinephrine, orthostatic intolerance, cold pressor test, sodium nitroprusside, tyramine, sympathetic nervous system, autonomic dysfunction
- MeSH terms
- Adult, Arm, Autonomic Nervous System Diseases, Blood Pressure, Cold Temperature, Female, Femoral Vein, Heart Rate, Humans, Leg, Male, Nitroprusside, Norepinephrine, Posture, Reference Values, Sympathetic Nervous System, Tachycardia, Tyramine, Case-Control Studies
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