The electrocardiogram of myocardopathy.

摘要: Abstract Myocardopathies rank among the most common cardiac disorders. Although causing a diversity of findings, myocardial disease may be sufficiently characteristic to justify clinical diagnosis. Prolonged observation living patients and careful correlations ECG autopsy findings has improved physician's ability assess this group diseases. Mild involvement causes T wave abnormalities; severe bundle branch block hypertrophy patterns. Block left system is abnormality observed in autopsied cases chronic myocardopathy generally represents wide-spread pathology. Both acute simulate infarction. Any arrhythmia occur at any stage disease; ventricular irritability frequent relates sudden deaths which often terminate myocardopathy, sometimes when pathologic are only moderately advanced. Most maintain sinus rhythm; 10 per cent have atrial fibrillation or flutter, usually paroxysmal. The PR interval frequently lengthens, yet complete AV rare. QT prolongation occurs cases. Certain secondary myocardopathies present distinctive Hypertrophic subaortic stenosis deep Q deflections precordial leads. Cardiac amyloidosis commonly low voltage lead deep, broad resembling Muscular dystrophy give rise tall right R deflections; glycogen storage shortens interval. Chagas with axis deviation. evolution electrocardiographic changes important prognostic significance. Serial electrocardiography essential proper management disease.