Revista de patología y diagnóstico quirúrgico

Autonomic Imbalance during Exercise and Stress Testing Heart Attack and Stroke

Abstract

Lisa Andrew

Exercise stress testing (EST) has limited diagnostic power for obstructive coronary artery disease (CAD). The analysis of heart rate variability (HRV) may improve the sensitivity of CAD detection. The purpose of this study was to look at the relationship between short-term HRV and myocardial ischemia during EST, specifically the acceleration, maximum and recovery stages of heart rate (HR). HRV during EST was compared in 19 healthy (RHC) subjects and 35 CAD patients (25 with insignificant CAD (iCAD) and 10 with significant CAD (sCAD)). As a result, at the maximum stage, all HRV indices decreased and no significant differences between iCAD and sCAD were discovered.