Mestroni L, Neri R, Camerini F
G Ital Cardiol. 1986 Dec;16(12):1009-17.
The electrocardiogram (ECG) of 80 patients with dilated cardiomyopathy was studied. An abnormal ECG was present in 100% of our patients, and in 25% it was the first sign of the disease. Thirty-eight cases (47.5%) showed left atrial enlargement, 22 (27.5%) prolonged PR interval, 33 (41.2%) left bundle branch block, 15 (18.7%) abnormal Q waves, 9 (11.2%) primary S-T and T changes. There were significant differences in ejection fraction and in left ventricular end-diastolic volume between patients with right bundle branch block (p less than 0.05 and p = 0.05 respectively). Patients were followed for a period of 29.5 +/- 28.8 months (min. 2 days, max. 10 years): during the observation period the ECG showed in 28 cases an increasing left ventricular conduction delay and a leftward shifting of mean QRS axis. Patients with left ventricular conduction delays showed a worse prognosis. ECG in dilated cardiomyopathy is a nonspecific but sensitive tool, which may be related to different degrees of myocardial impairment and may be useful in the definition of a prognostic profile.
对80例扩张型心肌病患者的心电图进行了研究。我们所有患者的心电图均异常，其中25%是该病的首发症状。38例（47.5%）表现为左心房扩大，22例（27.5%）PR间期延长，33例（41.2%）左束支传导阻滞，15例（18.7%）出现异常Q波，9例（11.2%）有原发性S-T段和T波改变。右束支传导阻滞患者的射血分数和左心室舒张末期容积存在显著差异（分别为p<0.05和p = 0.05）。对患者随访了29.5±28.8个月（最短2天，最长10年）：在观察期内，28例患者的心电图显示左心室传导延迟加重，平均QRS电轴向左偏移。左心室传导延迟的患者预后较差。扩张型心肌病患者的心电图是一种非特异性但敏感的工具，它可能与不同程度的心肌损害有关，且有助于判断预后情况。
