title: Simulated 2:1 left bundle-branch block. Normalization of the left bundle-branch block pattern by ventricular extrasystoles.
mesh_terms: D001145:Arrhythmias, Cardiac; D002037:Bundle-Branch Block; D002318:Cardiovascular Diseases; D006327:Heart Block; D006801:Humans; D008499:Medical Records; D018879:Ventricular Premature Complexes
keywords: ARRHYTHMIA/case reports; HEART BLOCK/case reports