Heart block and pacing electrodes.
D001145:Arrhythmias, Cardiac / Q000209:etiology*; D002037:Bundle-Branch Block / Q000401:mortality / Q000628:therapy*; D004566:Electrodes / Q000009:adverse effects; D006327:Heart Block / Q000401:mortality / Q000517:prevention & control*; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects*