Intermittent Left Bundle Branch Block:

Abstract

Case PresentationThe BCG of a 60-year-old man with a dilated cardiomyopathy and normal coronary arteries showed nonnal sinus rhythm and PR intervals and intermittent complete left bundle branch block (LBBB). Figure 1 shows the baseline 12-lead E^G where the relatively narrow QRS complex (0.08 sec) probably represents a minor degree of incomplete LBBB associated with left ventricular Figure 1. Twelve-lead ECG showing a tiny q in aVL The QRS measures 0.08 .second.^, and the pattem is compatible with a minor degree of incomplete teft bundte hranch btoctcand left ventricular hypertrophy.