title: Failure of demand pacemaker from low-voltage bipolar ventricular electrograms.
mesh_terms: D000219:Adams-Stokes Syndrome / Q000628:therapy; D000368:Aged; D004562:Electrocardiography; D004566:Electrodes; D005260:Female; D006327:Heart Block / Q000628:therapy; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000150:complications; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000592:standards