title: Pacemakers for heart block.
mesh_terms: D004417:Dyspnea / Q000517:prevention & control; D006327:Heart Block / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D007545:Isoproterenol / Q000627:therapeutic use; D010138:Pacemaker, Artificial / Q000295:instrumentation*; D011674:Pulse; D013548:Sweden; D006113:United Kingdom; D014481:United States
chemical_list: D007545:Isoproterenol