Novel Methods for Quantification of Vasodepression and Cardioinhibition During Tilt-Induced Vasovagal Syncope.

Conclusions: The novel methods allowed the relative effects of SV, HR and TPR on BP to be assessed separately, even though all act together. The two major factors lowering BP in T-VVS were reduced SV and cardioinhibition. We suggest that the term 'vasodepression' in reflex syncope should not be limited to reduced arterial vasoconstriction, reflected in TPR, but should also encompass venous pooling, reflected in SV.
PMID: 32460687 [PubMed - as supplied by publisher]

Source: Circulation Research - May 27, 2020 Category: Cardiology Authors: van Dijk JG, Ghariq M, Kerkhof FI, Reijntjes RH, van Houwelingen MJ, van Rossum IA, Saal DP, van Zwet EW, van Lieshout JJ, Thijs RD, Benditt DG Tags: Circ Res Source Type: research