title: Functional 2:1 A-V block within the His-Purkinje system. Simulation of type II second-degree A-V block.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D012032:Refractory Period, Electrophysiological; D012849:Sinoatrial Node / Q000503:physiopathology