title: Cardiomegaly. A possible factor in permanent endocardial pacing.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000628:therapy; D006332:Cardiomegaly / Q000209:etiology*; D004567:Electrodes, Implanted; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects*