Ambulatory electrocardiography in the assessment of pacemaker function.
D000368:Aged; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000628:therapy*; D006801:Humans; D008124:Locomotion; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012804:Sick Sinus Syndrome / Q000175:diagnosis / Q000628:therapy*