Long term transvenous cardiac pacing in heart block.
D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000401:mortality / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects; D011183:Postoperative Complications