Cerebral autoregulation is preserved in postural tachycardia syndrome
Abstract
To test whether cerebral autoregulation is impaired in patients with postural tachycardia syndrome (POTS), we evaluated 17 healthy control subjects and 27 patients with POTS. Blood pressure, heart rate, and cerebral blood velocity (transcranial Doppler) were recorded at rest and during 80° head-up tilt (HUT). Static cerebral autoregulation, as assessed from the change in cerebrovascular resistance during HUT, was the same in POTS and in controls. The properties of dynamic cerebral autoregulation were inferred from transfer gain, coherence, and phase of the relationship between blood pressure and cerebral blood velocity estimated from filtered data segments (0.02–0.8 Hz). Dynamic cerebral autoregulation of patients with POTS did not differ from that of controls. The patients' dynamic cerebral autoregulation did not change over the course of HUT, despite increased tachycardia suggestive of worsening orthostatic stress. Inflation of military anti-shock trouser pants substantially reduced the tachycardia of patients with POTS without affecting cerebral autoregulation. Symptoms of orthostatic intolerance were reduced in one-half of the patients following military anti-shock trouser pants inflation. We conclude that cerebral perfusion and autoregulation in many patients with POTS do not differ from that of normal control subjects.
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Some studies found preserved dynamic cerebral perfusion and autoregulation in POTS patients during orthostatic stress.
“Some studies have shown that dynamic cerebral perfusion and autoregulation are preserved in POTS patients during orthostatic stress (Schondorf et al., 2005;Endo et al., 2014).”
From Postural tachycardia syndrome – Diagnosis, physiology, and prognosis (2018) · cites this paper as Schondorf et al., 2005
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문연실, Kim, Y. J., 이준화, & 오지영 (2011)
- Authors
- Schondorf, R., Benoit, J., & Stein, R.
- Affiliations
- Jewish General Hospital (CA)
- ORCID
- Schondorf, Ronald
- Venue
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Published
- 2005-09
- Volume
- 99
- Issue
- 3
- Pages
- 828-835
- ISSN
- 0161-7567 (ISSN-L)
- 8750-7587
- 1522-1601
- OpenAlex
- W2120609490
- Cited by
- 38
- References
- 57
- Citations by year
- 2025: 1 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 4 · 2013: 4
- FWCI
- 0.95
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Physiology (publishedVersion)
- PubMed (publishedVersion)
- 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 › Neurology › Long-Term Effects of COVID-19
- Keywords
- postural orthostatic tachycardia syndrome, cerebral autoregulation, cerebrovascular resistance, head-up tilt, orthostatic intolerance, cerebral blood flow velocity, tachycardia, orthostatic stress, cerebral perfusion
- MeSH terms
- Adaptation, Physiological, Adult, Blood Flow Velocity, Blood Pressure, Brain, Cerebrovascular Circulation, Diagnosis, Computer-Assisted, Dizziness, Feedback, Female, Heart Rate, Humans, Male, Posture, Syndrome, Tachycardia
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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