title: Do all pacemakers need both antibradycardia and antitachycardia pacing features?
mesh_terms: D000328:Adult; D000368:Aged; D001919:Bradycardia / Q000517:prevention & control*; D002304:Cardiac Pacing, Artificial / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012189:Retrospective Studies; D013610:Tachycardia / Q000517:prevention & control*