title: Electrocardiogram of the month. Intracardiac electrogram. Paradoxic slowing of ventricular rate with intravenous isoproterenol in a patient with A-V block.
mesh_terms: D000328:Adult; D001024:Aortic Valve Stenosis / Q000150:complications; D001283:Atrioventricular Node / Q000503:physiopathology; D004562:Electrocardiography; D006327:Heart Block / Q000188:drug therapy* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D007263:Infusions, Parenteral; D007545:Isoproterenol / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male
chemical_list: D007545:Isoproterenol