Efficiency of a pacemaker clinic to prevent sudden pacing failures.
D003645:Death, Sudden; D004562:Electrocardiography; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000401:mortality; D006801:Humans; D010044:Outpatient Clinics, Hospital; D010138:Pacemaker, Artificial / Q000009:adverse effects; D013997:Time Factors