Right bundle branch block during transvenous ventricular pacing.
D000368:Aged; D002037:Bundle-Branch Block / Q000209:etiology*; D006328:Cardiac Catheterization / Q000009:adverse effects*; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*