Treatment of heart-block and bradycardias.
D001146:Arrhythmia, Sinus / Q000188:drug therapy; D001919:Bradycardia / Q000188:drug therapy*; D002037:Bundle-Branch Block / Q000188:drug therapy; D006327:Heart Block / Q000188:drug therapy*; D006801:Humans; D012804:Sick Sinus Syndrome / Q000188:drug therapy