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目的分析冠心病无症状心肌缺血(SMI)与心率变异性(HRV)的关系。方法选择86例冠心病无症状心肌缺血患者和52例健康人行24h动态心电图心率变异性对比,心率变异性分析包括正常RR间期标准差(SDNN),5min平均RR间期标准差(SDANN)等。结果冠心病无症状心肌缺血各时域指标依次减少与对照组比较,各参数差异有统计学意义(P<0.05)。结论冠心病无症状心肌缺血是冠心病患者心肌缺血最常见的一种表现形式,心肌缺血改变了自主神经调节的均衡性,而冠心病无症状心肌缺血的发生可能与心脏自主神经病变加重有关。
Objective To analyze the relationship between asymptomatic myocardial ischemia (SMI) and heart rate variability (HRV) in patients with coronary heart disease. Methods The comparison of heart rate variability (HRV) of 86 patients with asymptomatic myocardial ischemia in 52 patients with coronary heart disease and 52 healthy volunteers was performed. The analysis of heart rate variability included standard deviation of normal RR interval (SDNN), standard deviation of 5 min mean RR interval (SDANN) Wait. Results Asymptomatic myocardial ischemia in each index decreased in sequence with the control group, the parameters were significantly different (P <0.05). Conclusion Asymptomatic myocardial ischemia in patients with coronary heart disease is the most common form of myocardial ischemia, myocardial ischemia has changed the balance of autonomic regulation, and coronary heart disease asymptomatic myocardial ischemia may be related to cardiac autonomic nerve Increased disease.