Stokes-Adams Attacks due to Acute Nonspecific Myocarditis in Childhood

Abstract
Six patients aged between 1-11 yr (4 females and 2 males) developed Stokes-Adams attacks with complete heart block due to acute nonspecific myocarditis. Transvenous pacing was instituted in 2 patients but in the other 4 patients the ECG returned to normal by isoproterenol. All ECG in complete heart block showed QRS complexes of right bundle branch block with left posterior hemiblock pattern, except for 1 which showed QRS complexes of complete left bundle branch block pattern. The ECG improved sequentially in order and left anterior hemiblock pattern of QRS complexes remained to the last during the convalescent period. Normal atrioventricular conduction returned by 2-24 h in all but 1 patient who had died and 1 of the 2 patients with shock. In another patient bifascicular block persisted.

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