January 1, 1996Japanese Heart JournalOpen Access

Hemodynamic Mechanism of Vasovagal Syncope.

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Why the study?

What are the hemodynamic mechanisms underlying vasovagal syncope provoked by head-up tilt testing in patients with recurrent unexplained syncope?

Population

32 patients with recurrent unexplained syncope. A subgroup of 12 patients who developed typical vasovagal…

Design

Cross-sectional

Authors

JWJiann Jong WangCheng Hsin General Hospital WCWan Leong ChanNational Yang Ming Chiao Tung University CKChi Woon KongNational Yang Ming Chiao Tung University

Discussion

Member takes

Implication

Supports dual hemodynamic mechanisms in tilt-induced vasovagal syncope; hypothesis-generating without altering current management.

Structured PICO

What are the hemodynamic mechanisms underlying vasovagal syncope provoked by head-up tilt testing in patients with recurrent unexplained syncope?

Population

32 patients with recurrent unexplained syncope. A subgroup of 12 patients who developed typical vasovagal syncope had a mean age of 53.3 +/- 15 years, comprising 5 women and 7 men.

Intervention

Head-up (60 degrees) tilt test

Outcome

Hemodynamic changes including electrocardiogram, arterial blood pressure, pulmonary arterial pressure, central venous pressure, and cardiac outputsurrogate

Both reduction of cardiac output and withdrawal of sympathetic vasoconstriction tone contribute to the development of hypotension in vasovagal syncope.

Cite This Study

Wang et al. (1996) studied this question.

synapsesocial.com/papers/6a7609d5554f5a6e3e613abc https://doi.org/10.1536/ihj.37.361

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Hemodynamic Mechanism of Vasovagal Syncope.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Hemodynamic Mechanism of Vasovagal Syncope.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Also Consider

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