Особенности вариабельности ритма сердца при инфаркте миокарда у женщин

Violation of the autonomic regulation of the heart with a predominance of sympathetic activity is a risk factor for sudden cardiac death. The most important marker for this condition is the reduction in the variability of sinus rhythm. The article presents the results of clinical and functional studies of 120 women and 50 men with acute myocardial infarction. It was analyzed time (SDNN, SDANN, rMSSD) and spectral (TP, VLF, LF, HF, LF / HF) heart rate variability for the day, during the day and night in association with echocardiographic characteristics of the myocardium. It was observed the decreasing in vagal activity and imbalance of autonomic influences on the sinus rhythm in favor of the sympathetic nervous system in both women and men with acute myocardial infarction. However, groups of women indicated a greater decreasing of time result than in men with a tendency to the highest severity at night. It was also revealed a positive correlation between the decreasing in time heart rate variability and decreasing left ventricular ejection fraction in the group of women over 60 and men.