高龄老年人心率状况及变异性特点

摘要

Objective To investigate the heart rate condition and variability of very elderly people.Methods A total of 149 very elderly people (≥80 years old) and 188 subjects aged from 60 to 79 years old with Holter Data,including average heart rate,maximum heart rate,minimum heart rate of 24 bours,SDNN and SDANN,were retrospectively reviewed and compared.Results Compared with the subjects aged from 60 to 79 years old,average heart rate [(68.9 ± 8.4) beat/min vs.(71.7 ± 8.3) beat/min],maximum heart rate [(103.2 ± 18.8) beat/min vs.(114.7 ± 17.7) beat/min],SDNN [(116.7 ± 36.8)ms vs.(131.3 ±40.7) ms] andSDANN [(36.7±10.2)msvs.(42.5±13.1) ms] of very elderly people were significantly decreased (all P ＜ 0.05),and minimum heart rate was similar [(52.2 ± 7.0) beat/min vs.(52.1 ± 6.2) beat/min,P ＞ 0.05)].Conclusions The average heart rate,maximum heart rate and heart rate variability of very elderly people are significantly decreased than those of general old people,but the minimum heart rate has no significant difference between the two groups.%目的 了解高龄老年人的心率状况及心率变异性特点.方法 调查149例年龄≥80岁的高龄老年人的动态心电图(Holter)数据,包括24 h平均心率、最快心率、最慢心率及心率变异性指标正常R-R间期的标准差(SDNN)和每5 min正常R-R间期平均值的标准差(SDANN),与同期行Holter检查的188例年龄60 ～ 79岁的老年人的相应指标进行比较.结果 高龄老年人与60 ～ 79岁老年人相比较,24 h平均心率降低[(68.9±8.4)次/min比(71.7±8.3)次/min,P＜0.05],最快心率降低[(103.2±18.8)次/min比(114.7±17.7)次/min,P＜0.05],最慢心率差异无统计学意义[(52.2±7.0)次/min比(52.1±6.2)次/min,P＞0.05],两组SDNN[(116.7±36.8)ms比(131.3±40.7)ms]和SDANN[(36.7±10.2) ms比(42.5±13.1)ms]比较,差异均有统计学意义(均为P＜0.05).结论 高龄老年人的平均心率、最快心率较60～79岁老年人轻度下降,心率变异性降低.