Abstract：Objective To analyze the heart rate variability(HRV) of hypertensives complicating type 2 diabetes.MethodsSixty cases of hypertensives complicating type 2 diabetes(group A), 60 cases of hypertensives(group B), and 60 cases of health checkup people(group C) were selected and carried out 24 h ambulatory electrocardiography. The HRV indices were compared among the 3 groups.ResultsFor group A, the standard deviation of normal to normal intervals(SDNN), every 5 minutes average standard deviation(SDANN) and every 5 minutes standard deviation of mean RR intervals(SDNN index) within 1 d, and rate mean square of the differences of successive RR intervals (rMSSD) and percentage of RR intervals differing ＞50 ms(pNN50) were separately (97.88±25.77) ms, (83.24±20.13) ms, (14.55±10.57) ms, (17.95±8.55) ms, and (3.56±2.44)%, significantly lower than those of group B［(122.41±20.33) ms, (104.56±19.73) ms, (45.22±12.45) ms, (22.44±6.44) ms, and (8.83±4.95) %, respectively］ and those of group C［(138.23±22.44) ms, (127.95±21.84) ms, (59.35±16.44) ms, (35.96±14.33) ms, and (13.56±11.24) %, respectively］. And compared with group C, the above HRV indices of group B were also much lower. The differences were all statistically significant(P<0.05).ConclusionFor hypertensives complicating type 2 diabetes, HRV can be applied in identifying the degree of autonomic nerve functional lesions at an early phase. The method proves to be safe, reliable and worthy of clinical promotion.
2014, Vol. 23 
