AV sequential and atrial pacemakers (special indications).
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000628:therapy; D003327:Coronary Disease / Q000628:therapy; D004562:Electrocardiography; D006325:Heart Atria; D006333:Heart Failure / Q000628:therapy; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012008:Recurrence; D013575:Syncope / Q000628:therapy; D013610:Tachycardia / Q000628:therapy