Programmable pacemakers.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000628:therapy; D002304:Cardiac Pacing, Artificial / Q000379:methods; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial