title: Spectrum of ventricular pacemaker exit block owing to hyperkalemia.
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D006947:Hyperkalemia / Q000150:complications*; D010138:Pacemaker, Artificial