Evidence map›Paper›PMID 22678960›Full record

ReviewJournal of applied physiology (Bethesda, Md. : 1985)2012

Mechanisms of sympathetic regulation in orthostatic intolerance.

Julian M Stewart

Registry-linked trialAbstract readReview
In one paragraph

Review in Journal of applied physiology (Bethesda, Md. : 1985), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03970551 (Lower Body Muscle Pre-activation in Initial Orthostatic Hypotension), which is not on this map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03970551 naunknown statusnot on this mapstarted 2019, after this paper: background citation

Lower Body Muscle Pre-activation in Initial Orthostatic Hypotension: Effects on Orthostatic Tolerance

TypeinterventionalSponsorUniversity of CalgaryRan2019 to 2023Enrolled64ConditionsOrthostatic Intolerance, Syncope, Fainting, PresyncopeArmsPhysical Counter-maneuver, Stress Test, Functional Electrical Stimulation
3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 113 citations in OpenAlex.

  1. Hemodynamic orthostatic dizziness/vertigo: Diagnostic criteria.Journal of vestibular research : equilibrium & orientation
    Guideline
  2. Trial
  3. Trial
  4. Trial
  5. Autonomic Dysfunction in Patients withPathogens (Basel, Switzerland) · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Attenuated cardiac autonomic function in patients with long-COVID with impaired orthostatic hemodynamics.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2025
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Observational
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Julian M StewartDepartments of Physiology, Pediatrics and Medicine, New York Medical College, Valhalla, NY, USA. mail: julian_stewart@nymc.edu
New York Medical College · US

Funding

Local Vasoconstriction in Postural Tachycardia SyndromeR01HL074873 · NHLBI · NEW YORK MEDICAL COLLEGE · PI STEWART, JULIAN M · 2004 to 2013
$3.4M
Mechanisms of Vasovagal SyncopeR01HL112736 · NHLBI · NEW YORK MEDICAL COLLEGE · PI STEWART, JULIAN M · 2013 to 2016
$2.1M
Vascular Dysfunction in CFSR01HL087803 · NHLBI · NEW YORK MEDICAL COLLEGE · PI STEWART, JULIAN M · 2008 to 2011
$1.6M
NHLBI NIH HHS R01 HL074873NHLBI NIH HHS R01-HL074873NHLBI NIH HHS R01 HL087803NHLBI NIH HHS R01-HL087803NHLBI NIH HHS R01 HL112736
6 · The paper itself

Abstract

Sympathetic circulatory control is key to the rapid cardiovascular adjustments that occur within seconds of standing upright (orthostasis) and which are required for bipedal stance. Indeed, patients with ineffective sympathetic adrenergic vasoconstriction rapidly develop orthostatic hypotension, prohibiting effective upright activities. One speaks of orthostatic intolerance (OI) when signs, such as hypotension, and symptoms, such as lightheadedness, occur when upright and are relieved by recumbence. The experience of transient mild OI is part of daily life. However, many people experience episodic acute OI as postural faint or chronic OI in the form of orthostatic tachycardia and orthostatic hypotension that significantly reduce the quality of life. Potential mechanisms for OI are discussed including forms of sympathetic hypofunction, forms of sympathetic hyperfunction, and OI that results from regional blood volume redistribution attributable to regional adrenergic hypofunction.

Indexed as

HemodynamicsAnimalsBlood PressureCardiovascular SystemHeart RateHomeostasisHumansHypotension, OrthostaticOrthostatic IntolerancePostural Orthostatic Tachycardia SyndromeSympathetic Nervous SystemSyncope, VasovagalVasoconstriction

Identifiers

PMID22678960
PMCPMC3524660
OpenAlexW1997113432

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.