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Heart rate variability and hemodynamics changes during rehabilitation in patients after coronary artery bypass grafting
Date Issued |
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2009-09-01 |
The goal of this study was to evaluate the changes of autonomic heart rate (HR) control and hemodynamics during rehabilitation process and 2-year follow-up period in patients after coronary artery bypass grafting (CABG). The contingent of the study was 227 coronary artery disease patients after CABG investigated before and after second stage of rehabilitation and during follow-up periods: after 6-month and 1-, 1.5- and 2-year periods. Our results had showed that heart rate variability assessed by means of Poincare plots and hemodynamics characteristics were lowest in the beginning of rehabilitation and significant improvement during 1-year period after surgery. The strongest positive correlations of rehabilitation efficacy with HR general variability, maximal response during active orthostatic test, and HR control during sleep as well as with hemodynamics characteristics were determined. The restoration of autonomic HR control during rehabilitation process was evident.