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Figure 4 Outcomes in Pacemaker and ICD Patients
There were 8 patients in whom a pacemaker was initially implanted. In this group there was 1 death, and 4 patients underwent upgrade to an implantable cardioverter-defibrillator (ICD), 3 after documented ventricular tachycardia (VT) or ventricular fibrillation (VF). A single asymptomatic patient underwent an upgrade to an ICD at the time of a generator change because of concerns about compliance with beta-blocker therapy. There were 19 patients who underwent an ICD implantation as initial device therapy. Appropriate shocks have occurred in 5 patients, and inappropriate shocks in 4 patients. Sixteen ICD patients have not had a shock.
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