title: RETROGRADE CONDUCTION AND ISORHYTHMIC DISSOCIATION IN HEART BLOCK.
mesh_terms: D006328:Cardiac Catheterization; D004562:Electrocardiography; D006327:Heart Block; D006329:Heart Conduction System; D006339:Heart Rate; D006801:Humans; D010138:Pacemaker, Artificial; D010827:Physiology
keywords: ELECTROCARDIOGRAPHY; HEART BLOCK; HEART CATHETERIZATION; HEART CONDUCTION SYSTEM; HEART RATE; PACEMAKER, ARTIFICIAL; PHYSIOLOGY