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Analysis of heart rate variability in hypertensives complicating type 2 diabetes |
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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.
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