Cardiac Autonomic Response to Active Standing in Calcific Aortic Valve Stenosis.

ABSTRACT: Aortic stenosis is a progressive heart valve disorder characterized by calcification of the leaflets. Heart rate variability (HRV) analysis has been proposed for assessing the heart response to autonomic activity, which is documented to be altered in different cardiac diseases. The objective of the study was to evaluate changes of HRV in patients with aortic stenosis by an active standing challenge. Twenty-two volunteers without alterations in the aortic valve (NAV) and twenty-five patients diagnosed with moderate and severe calcific aortic valve stenosis (AVS) participated in this cross-sectional study. Ten minute electrocardiograms were performed in a supine position and in active standing positions afterwards, to obtain temporal, spectral, and scaling HRV indices: mean value of all NN i

SUBMITTER: Torres-Arellano JM 

PROVIDER: S-EPMC8124878 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature