Assessment of autonomic cardiac control in women with cardiac syndrome X using Time Related Autonomic Balance Indicator

The various CVD (AH, CHF, IHD) have a different circadian profile of autonomic cardiac control (ACC), compared to the profile in healthy subjects (HS). In this study we analyze the specific abnormalities in ACC circadian changes in women with cardiac syndrome X (CSX). The results indicated that: i. circadian profile of ACC in women with CSX is similar to that in healthy women; ii. ACC reactivity is suppressed; iii. lower vagal and higher sympathetic activity in comparison with the levels of the autonomic balance in healthy women are the characteristics of the particular disorder in ACC in women with CSX.