title: Terminology and electrophysiologic concepts in cardiac arrhythmias. VI. Phase 3 block and phase 4 block. Part 2.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D002037:Bundle-Branch Block / Q000503:physiopathology; D004562:Electrocardiography; D004594:Electrophysiology; D006327:Heart Block / Q000503:physiopathology*