title: Ectopic tachycardias with unusual retrograde conduction to the atria.
mesh_terms: D000328:Adult; D000368:Aged; D002740:Chlorothiazide / Q000627:therapeutic use; D003327:Coronary Disease / Q000188:drug therapy*; D004074:Digitoxin / Q000627:therapeutic use; D004562:Electrocardiography; D004809:Ephedrine / Q000627:therapeutic use; D006327:Heart Block; D006801:Humans; D008297:Male; D008614:Meperidine / Q000627:therapeutic use; D008875:Middle Aged; D005996:Nitroglycerin / Q000627:therapeutic use; D011342:Procainamide / Q000627:therapeutic use; D011674:Pulse; D011802:Quinidine / Q000627:therapeutic use; D012631:Secobarbital / Q000627:therapeutic use; D013610:Tachycardia / Q000175:diagnosis*
chemical_list: D012631:Secobarbital; D002740:Chlorothiazide; D008614:Meperidine; D004074:Digitoxin; D005996:Nitroglycerin; D004809:Ephedrine; D011802:Quinidine; D011342:Procainamide