空气净化对老年陈旧性心肌梗死心率变异性的影响

Effects of air cleaning on heart rate variability in elderly patients with old myocardial infarction

目的:探讨空气净化对老年陈旧性心肌梗死患者心脏自主神经功能的改善。方法:老年陈旧性心肌梗死(OM I)患者89例随机分为空气净化组(n=54)和未净化组(n=45),另选20人为健康对照组。空气净化组所处的病房进行24小时空气净化,未净化组住普通病房,不进行空气净化。住院时和3个月后进行24小时动态心电图检查,采用时域法和频域法研究OM I后心率变异性(HRV)的改变。结果:空气净化3个月后,患者24小时正常RR间期标准差(SDNN)由(106±23)m s上升为(126±28)m s;24小时内连续的5 m in节段正常RR间期标准差的平均数(RMSSD)由(21±11)m s上升为(33±15)m s;其低频面积由(228±123)bpm2/Hz上升为(305±156)bpm2/Hz;高频面积由(167±106)bpm2/Hz上升为(349±180)bpm2/Hz;其低频面积/高频面积由1.53±1.09下降为0.97±0.71,以上均P<0.05。结论:对OM I患者行空气净化治疗,有益于改善其心脏自主神经功能。

Objective ：To study the effects of air cleaning on heart rate variability in elderly patients with old myocardial infarction. Methods： The air of houseroom lived in 54 elderly patients with old myocardial infarction were cleansed for 24 h one day, and parameters of heart rate variability which be determined by 24 h ambulatory electrocardiography for HRV. Results： The effects of clinical symptom and electrocardiography were increased for 93% and 89%. The indexes of heart rate variability were partly the markedly improved. Condusions： The therapy of air cleaning can markedly improve the sympathovagal system of elderly patients with old myocardial infarction.