原发性扩张型心肌病病理改变的特点是弥漫性心肌变性和坏死,常常累及整个心脏。左室是最主要的病变部位,病变累及心肌工作细胞,导致心肌收缩力降低,累及传导系统,导致各种心律失常。心电图检查均有异常表现,包括一些无症状患者,心电图与心脏超声相结合,有助于提高早期诊断率,早期治疗,改善预后有重要价值。 Pathological changes of primary dilated cardiomyopathy are characterized by diffuse degeneration and necrosis of the myocardium, often involving the entire heart. Left ventricle is the most important lesion, lesions involving the working cells of the myocardium, resulting in decreased myocardial contractility, involving the conduction system, leading to a variety of arrhythmias. ECG abnormalities are abnormal, including some asymptomatic patients, ECG and cardiac ultrasound combined to help improve the early diagnosis rate, early treatment, improve the prognosis of great value.