title: Patients test drive pacemaker   before choosing permanent   implant.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001919:Bradycardia / Q000628:therapy*; D002755:Choice Behavior; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial