目的 观察和分析2型糖尿病患者心电图异常情况，以进一步加深对糖尿病心脏损伤的认识。方法 对369例2型糖尿病患者常规和动态心电图进行分析，并与年龄、性别、基础疾病相匹配无糖尿病的对照组比较。结果 糖尿病组最高心率（113±8）次/min较对照组（98±8）次/min显著增高，最低心率（51±10）次/min较对照组（66±8）次/min明显减低，心律失常较对照组明显增加,其中窦性196/43、房性307/99、交界性78/22、室性301/126、传导异常178/41、ST-T缺血性改变也均较对照组显著增多(ST段221/68、T波192/63),差异有统计学意义（P<0.05）。结论 2型糖尿病患者易发生心电图异常，可能与高血糖和低血糖对心脏损害等有关。

Objective To observe and analyze the changes in electrocardiograms in patients with type 2 diabetes mellitus for a better knowledge of heart lesion caused by diabetes mellitus. Methods The conventional and dynamic electrocardiograms from 369 patients with type 2 diabetes mellitus were compared with those of the controls without diabetes mellitus who matched the patients in age and gender. Results The mean maximum heart rate (113±8) beats/min in patients with diabetes mellitus was significantly higher than that in the control group (98±8)beats/min, but the mean minimum heart rate beats/min was obviously lower in the former ［(51±10) vs (66±8) beats/min］. The incidence of arrhythmia in patients with diabetes mellitus was significantly higher than that in the controls (1060 vs 331 times/24 h), including the sinus (196 vs 43 times/24 h), the atrial (307 vs 99 times/24 h), the junctional (78 vs 22 times/24 h), the ventricular (301 vs 126 times/24 h) and abnormal conduction (178 vs 41 times/24 h). Moreover, the incidence of ST-T ischemic change in patients with diabetes mellitus was also significantly increased when compared with the controls (221 vs 68 times/24 h for ST, and 192 vs 63 times/24 h for T wave, P