Pervenous standby pacing of the heart.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000601:surgery*; D001919:Bradycardia / Q000601:surgery; D006328:Cardiac Catheterization; D004582:Electronics, Medical; D005260:Female; D006327:Heart Block / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000401:mortality; D014680:Veins