Analysis of heart rate variability of elderly patients with hypertension or concurrent hypertension and diabetes

Objective To investigate the characteristic of heart rate variability(HRV)of elderly patients with hypertension or hypertension combining diabetes.Methods The heart rate variation and arrhythmia were observed with continuously dynamic electrocardiogram monitoring.The HRV and arrhythmia were compared in 38 cases of essential hypertension(EH),38 cases of hypertension with diabetes and 40 healthy subjects.Results There were significant differences among hypertension group,hypertension with diabetes group and control group(P 0.001).Except PNN50,there were significant differences in the standard deviation of mean value and the mean value of standard deviation in sinus R-R interval at every 5 minutes for continuous 24 hours monitoring,and the mean square root of difference in continuous normal R-R interval(P 0.001).The frequency of premature beat in EH and EH combining diabetes patients was higher than that in controls(P 0.001).Conclusion Dynamic electrocardiogram HRV surveillance can identify the damage degree of heart vegetative nerve function in the elderly with hypertension and hypertension associated with diabetes.