Veränderte Interaktion von Blutdruck und Herzfrequenz bei idiopathischer dilatativer Kardiomyopathie. Pattern Analysis of Blood Pressure and Heart Rate in Idiopathic Dilated Cardiomyopathy

Abstract

We demonstrated significant interaction of the regulation patterns of blood pressure and heart rate, as also their interactions in IDC. Opposed changes in HR and SYS mediated by the baroreflex, became superimposed by alternans phenomena in IDC. The pattern analysis of changes in HR and SYS detects these disturbances of neurovegetative short-term control.

Joint symbolic dynamics for the assessment of cardiovascular and cardiorespiratory interactions

“…In patients with idiopathic dilated cardiomyopathy, word type distribution of HR and SAP dynamics changed from a predominance of baroreflex patterns towards patterns of alternating RR and SAP (i.e. increase-decrease-increase patterns or decrease-increase-decrease patterns) compared to normal subjects, demonstrating impairment in haemodynamic cardiac function [81]. Short-term detrended fluctuation analysis of joint symbolic time series, which provides a measure of long-range correlations, showed a reduction in correlation RR and SAP dynamics in patients with dilated cardiomyopathy compared with normal subjects and indicates a loss of blood pressure control [15].…”