Mechanisms of Vasovagal Syncope in the Young: Reduced Systemic Vascular Resistance Versus Reduced Cardiac Output [Arrhythmia and Electrophysiology]

ConclusionsBoth ↓CO and ↓SVR occur in young VVS patients. ↓SVR is predominant in VVS and is caused by impaired splanchnic vasoconstriction.

Source: JAHA:Journal of the American Heart Association - January 18, 2017 Category: Cardiology Authors: Stewart, J. M., Medow, M. S., Sutton, R., Visintainer, P., Jardine, D. L., Wieling, W. Tags: Clinical Studies, Hemodynamics, Physiology Original Research Source Type: research