title: Concealed bypasses of the atrioventricular mode in patients with paroxysmal supraventricular tachycardia revealed by intracardiac electrical stimulation and verapamil.
mesh_terms: D000328:Adult; D000368:Aged; D001281:Atrial Fibrillation / Q000209:etiology; D003327:Coronary Disease / Q000150:complications; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013614:Tachycardia, Paroxysmal / Q000150:complications / Q000209:etiology / Q000503:physiopathology*; D013997:Time Factors; D014693:Ventricular Fibrillation / Q000209:etiology; D014700:Verapamil
chemical_list: D014700:Verapamil