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Clinical Autonomic Research
Erschienen in: Clinical Autonomic Research 4/2008

01.08.2008 | RESEARCH ARTICLE

Optimizing squatting as a physical maneuver to prevent vasovagal syncope

verfasst von: C. T. Paul Krediet, MD, Ingeborg K. Go-Schön, Johannes J. van Lieshout, MD, PhD, Wouter Wieling, MD, PhD

Erschienen in: Clinical Autonomic Research | Ausgabe 4/2008

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Abstract

Objectives

Squatting is a potent physical maneuver to prevent syncope; however, a major drawback is that standing up from squatting is a large hemodynamic stressor that often causes new presyncopal symptoms. We tested the hypothesis that lower body skeletal muscle tensing (LBMT) attenuates the decrease of mean arterial blood pressure (MAP) upon standing from squatting when used as a maneuver to prevent vasovagal syncope.

Methods and results

In 18 patients (10 females and 8 males, median age 37.5 years) we followed continuous MAP, cardiac output (CO, by Modelflow) and total peripheral resistance (TPR) during tilt test-provoked pre-syncopal episodes. After standing up from squatting MAP decreased to a nadir of 64 ± 4 mmHg (mean ± SE), related to a reduction in CO 73 ± 5% of supine values. Standing up with LBMT limited the reduction in CO (85 ± 6 %, P < 0.05) and MAP nadir (to 76 ± 3 mmHg; P < 0.05 compared to without LBMT) with fewer or no presyncopal symptoms. Standing up from squatting with and without LBMT did not affect TPR (99 ± 5% vs. 101 ± 7%).

Interpretation

LBMT is proposed as an effective follow-up maneuver to squatting when applied to prevent syncope.
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Metadaten
Titel
Optimizing squatting as a physical maneuver to prevent vasovagal syncope
verfasst von
C. T. Paul Krediet, MD
Ingeborg K. Go-Schön
Johannes J. van Lieshout, MD, PhD
Wouter Wieling, MD, PhD
Publikationsdatum
01.08.2008
Verlag
D. Steinkopff-Verlag
Erschienen in
Clinical Autonomic Research / Ausgabe 4/2008
Print ISSN: 0959-9851
Elektronische ISSN: 1619-1560
DOI
https://doi.org/10.1007/s10286-008-0481-0

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