Pacemaker rhythms. Apparent VVI (or ? VOO) pacing by AV sequential demand (DVI) pulse generator.
D000219:Adams-Stokes Syndrome / Q000209:etiology; D000368:Aged; D004562:Electrocardiography; D004868:Equipment Failure; D006327:Heart Block / Q000150:complications / Q000628:therapy; D006333:Heart Failure / Q000209:etiology; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*