Title :
Recovery of heart rate variability and baroreflex sensitivity following open heart surgery
Author :
Brockmann, G. ; Wessel, N. ; Malberg, H. ; Lange, R. ; Bauernschmitt, R.
Author_Institution :
Dept. of Cardiovascular Surg., German Heart Center, Munich
Abstract :
Dynamic measures of heart rate variability (HRV) and baroreflex sensivity (BRS) may uncover the postoperative course of patients undergoing cardiovascular surgery. 162 patients participated in a prospective study; Cardiovascular signals were recorded the day before, 24 h after surgery, one week and three month after surgery. Time domain parameters of heart rate variability showed a significant (p = 8,9-10~ ) decline 24 h after surgery and a significant recovery (p = 0,00049) first week after surgery. The bradycardic and tachycardic regulation strength regenerated similar. Furthermore the number of tachycardiac regulations decreased significant (p = ) within the first week after surgery. The HRV and BRS parameters of the autonomic system obviously show a tendency towards recovery after coronary artery surgery.
Keywords :
electrocardiography; haemodynamics; neurophysiology; surgery; BRS; HRV time domain parameters; autonomic nervous system; baroreflex sensitivity recovery; bradycardic regulation strength; cardiovascular signals; cardiovascular surgery; heart rate variability recovery; open heart surgery; tachycardic regulation strength; Arteries; Baroreflex; Cardiology; Frequency domain analysis; Heart rate; Heart rate variability; Heart valves; Measurement standards; Surgery; Time measurement;
Conference_Titel :
Computers in Cardiology, 2006
Print_ISBN :
978-1-4244-2532-7
