动态心电图评价男性冠心病无症状心肌缺血的发作特点

目的：探讨老年男性冠心病患者无症状心肌缺血（SMI）的动态心电图特点。方法：对198例老年男性冠心病患者进行动态心电图检查。结果：老年男性冠心病患者常规心电图心肌缺血检出率低（18．69％），动态心电图心肌缺血检出率高（65．15％），主要为SMI；SMI发生高峰为上午8时，日间SMI发生明显多于夜间；睡眠及日间休息时SMI平均持续时间较活动时明显延长（P〈0．05）。结论：老年男性冠心病患者SMI发生率高，其发生和持续时间有一定的规律，动态心电图是冠心病患者SMI的重要检测和评估手段。

Character of silent myocardial ischemia attacking in gerontal patients with coronary heart disease

Objective:To study the character of silent myocardial ischemia(SMI) attacking in gerontal patients with coronary heart disease(CHD).Methods:The 24 h dynamic electrocardiogram monitoring was performed in 198 gerontal male CHD patients.Results:The occurrence rate of the myocardial ischemia in gerontal male CHD patients detected by ECG was lower(18.69%),but detected by DCG was higher and mainly free of syndromes.The peak of occurrence of SMI was at 8 o'clock AM,SMI occurs obviously more often at daytime than at nighttime.The duration of SMI was significantly longer at sleeping time and rest time than at acting time(P<0.05).Conclusion:The occurrence rate of SMI in gerontal male CHD patients is higher.DCG is an important means of detection and evaluation for SMI in CHD patients.