Physiological studies and clinical experience in patients with synchronous and asynchronous pacemakers.
D000328:Adult; D000368:Aged; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D006325:Heart Atria; D006327:Heart Block / Q000628:therapy*; D006339:Heart Rate; D006352:Heart Ventricles; D006439:Hemodynamics; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial