原发性心肌病心电图的分析与探讨

Analysis of Electrocardiograms or Primary Cardiomyopsthy

本文对４０例确诊为原发性心肌病的心电图进行了回顾性分析。结果发现，在扩张型心肌病中，左室腔增大、左室游离壁变薄时，胸前导联ＱＲＳ波电压增高及ＳＴ－Ｔ的改变与常规心电图中左室肥厚及劳损的改变类似；左房扩大时Ｐ波时限并未≥０．１１ｓ，心尖肥厚型心肌病以多导联持续的尖、深、窄、双肢对称的倒置Ｔ波及下垂型ＳＴ段为其典型特征。空间隔肥厚型心肌病以持续下垂型ＳＴ段下移及负正双向Ｔ波为显著表现。作者提出对原发性心肌病不能用常规心电图标准来判断其左室游离壁厚度及左房扩大。

The electrocardiograms (ECG) of 40 determined cases of primary cardiomyopathy were reviewed in this article. The results showed that in the cases of dilated cardiomyopathy with enlargement of left ventricle and the thinning of left ventricle wall chest led QRS complex increased considerally and ST - T segment changed characteristically similar to that of common cases of left ventricle hyperthrophy and strain. The time ranges of P waves were still less than 0. 11second in left atrial enlargement. Under the condition of patients with apical hypertrophic cardiomyopathy, the ECGs were characterized by continuous multi-lead sharp, deep, narrow and symmetrically inversed T waves and ST segment depression.The authors concluded that proper ECG interpretation of some cases of primary cardiomyopathy was important and the common criteria were not completely reliable for the estimation of thickness of left ventricle wall and the left atrial enlargement.