Atrial pacing.
D000787:Angina Pectoris / Q000188:drug therapy / Q000503:physiopathology; D001281:Atrial Fibrillation / Q000188:drug therapy; D004562:Electrocardiography; D005069:Evaluation Studies as Topic; D006801:Humans; D007548:Isosorbide Dinitrate / Q000627:therapeutic use; D005996:Nitroglycerin / Q000627:therapeutic use; D010138:Pacemaker, Artificial
D005996:Nitroglycerin; D007548:Isosorbide Dinitrate