title: Inadequate endocardial potentials and pacemaker sensing problems: management by drug therapy.
mesh_terms: D000368:Aged; D004077:Digoxin / Q000008:administration & dosage*; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects*; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D011433:Propranolol / Q000008:administration & dosage*
chemical_list: D004077:Digoxin; D011433:Propranolol