Heart rate variability in elderly patients with coronary heart disease at different age stages
TIAN Guo-xiang
SONG Hui-min
ZHANG Jie
HUI Jian-jun
YAO Lu
WANG Xiao-bing
WU Yun-tao
XIA Chang-quan
LI Juan
ZHANG Wei
Abstract：Objective To investigate the heart rate variability (HRV) in elderly patients with coronary heart disease (CHD) at different age stages. Methods The elderly patients (n=162) were chosen from Jan. 2014 to Dec. 2014, and according to their age, divided into 60-69 group (n=54), 70-79 group (n=41) and≥80 group (n=67). All patients were given 24-h electrocardiogram (ECG) records by using MGY-H12 24-h ambulatory ECG analysis system. The time-domain indexes (SDNN, SDANN, SDNN Index, rMSSD and pNN50) and frequency-domain indexes (TP, VLF, LF and HF) of HRV were analyzed by using assort computer software, and compared among groups. Results As age increased, SDNN, SDANN, SDNN Index, TP, VLF and LF decreased gradually in 3 groups (P<0.05). The difference in SDNN and SDANN had statistical significance compared between≥80 group and 60-69 group or 70-79 group (P<0.05). The difference in TP, VLF and LF had statistical significance compared between 60-69 group and 70-79 group or≥80 group (P<0.05). The difference in rMSSD, pNN50 and HF had no statistical significance among 3 groups (P>0.05). Conclusion HRV shows a descending trend as age ascending in elderly patients with CHD.
Keywords：Heart rate variabilityElderly patientsCoronary heart diseaseAmbulatory electrocardiograph monitoring
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 544-546 )