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目的 观察年龄和血压对心率变异性的影响。方法 测定 114例高血压患者的心率变异指数 (HRVI) ,其中 5 9例为老年高血压患者 ,并与 131例正常人的HRVI进行对比。结果 正常老年组HRVI较正常中青年组的HRVI低 (P <0 .0 1) ,老年高血压组HRVI较正常老年人HRVI低 (P <0 .0 1) ,较中青年高血压组的HRVI低 (P <0 .0 1)。结论 随年龄增大 ,心率变异性减低 ,老年高血压患者心率变异性减低明显。
Objective To observe the effect of age and blood pressure on heart rate variability. Methods The heart rate variability index (HRVI) of 114 hypertensive patients was determined, of which 59 were elderly hypertensive patients and compared with HRVI of 131 normal subjects. Results HRVI in normal elderly group was lower than that in normal young group (P <0.01), HRVI in elderly hypertensive group was lower than that of normal elderly (P <0.01), HRVI Low (P <0. 01). Conclusion With the increase of age, heart rate variability decreases, and heart rate variability decreases significantly in elderly hypertensive patients.