陈旧性心肌梗死患者心脏自主神经昼夜节律改变  

The Change of Circadian Rhythm of Cardiac Autonomic Nervous System in Old Myocardial Infarction Patients

作　　者：何艳[1] 李金生[1] 韩君勇[1] 周元植[1] 

机构地区：[1]贵阳医学院附院心内科,贵州贵阳550004

出　　处：《贵阳医学院学报》2001年第2期127-128,130,共3页Journal of Guiyang Medical College

摘　　要：目的 :研究陈旧性心肌梗死患者心脏自主神经昼夜节律改变。方法 :应用 2 4h动态心电图系统对正常人及陈旧性心肌梗死患者心率变异性 (HeartRateVariability ,HRV)作定量分析 ,以SDNN(R -R间期 )和HF(高频成分 )作为HRV指标。结果 :正常人SDNN和HF均表现明显的昼夜差异 ,白昼HRV显著低于夜间 (P <0 0 5 )。陈旧性心肌梗死患者SDNN和HF昼夜差异无显著性 ,但从 2 4h分布看 ,HF仍表现昼低夜高的趋势 ,SDNN则无此变化。结论Objective:To study the change of circadian rhythm of cardiac autonomic nervous system (ANS) in old myocardial infarction (OMI) patients. Methods:We measured HRV from standard 24-hour electrocardiogram recordings in OMI patients and normal subjects. Standord deviation of individual normal R-R intervals (SDNN) and high frequency(HF) were used to measure HRV. Results:For normal subjects both SDNN and HF have significant circadian rhythm difference that SDNN and HF are lower during daytime than nightime (P<0 05). For OMI patients no apparent circadian rhythm occurrs but there is tendency of approximate change to normal subjects for HF measurement. Conclusion:The change of circadian rhythm of cardiac ANS in OMI patients may influence the recurrance of acute coronary accidents.

关 键 词：心肌梗死 自主神经系统 昼夜节律 

分 类 号：R542.22[医药卫生—心血管疾病] R741.02[医药卫生—内科学]