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  • Title: What is the risk of sudden cardiac death in patients presenting with hemodynamically stable sustained ventricular tachycardia after myocardial infarction?
    Author: Sarter BH, Finkle JK, Gerszten RE, Buxton AE.
    Journal: J Am Coll Cardiol; 1996 Jul; 28(1):122-9. PubMed ID: 8752804.
    Abstract:
    OBJECTIVES: This study sought to determine the long-term risk of sudden cardiac death in patients with hemodynamically stable sustained ventricular tachycardia complicating coronary artery disease. BACKGROUND: The prognosis and risk of sudden cardiac death in patients with a history of myocardial infarction and ventricular tachyarrhythmias have not been clearly defined. Prior studies are limited by a short follow-up period and by inclusion of patients with heterogeneous cardiac diseases and presenting arrhythmias. METHODS: A retrospective cohort analysis was performed on data from 124 patients, followed up for a mean of 36 +/- 30 months, who received electrophysiologically guided therapy for hemodynamically stable ventricular tachycardia after remote myocardial infarction. RESULTS: Seventy-eight patients were treated pharmacologically (medical group), and 46 patients underwent map-guided subendocardial resection (surgical group). Nine patients (7.3%) died suddenly, 5 (4.0%) died of noncardiac causes, 9 (7.3%) died of a perioperative complication, and 20 (23.4%) died of other cardiac causes. At 1, 2 and 3 years, sudden death occurred at cumulative rates of 2 +/- 1%, 3 +/- 2% and 7 +/- 3%, whereas total mortality was 20 +/- 4%, 28 +/- 4% and 32 +/- 5% (mean +/- SD). Sudden cardiac death (p = 0.047) and total mortality (p = 0.036) were higher in patients with multivessel disease and were similar for both treatment groups. CONCLUSIONS: Although the overall mortality in postinfarction patients presenting with hemodynamically stable ventricular tachycardia treated with electrophysiologically guided antiarrhythmic therapy is high, the risk of sudden death in these patients appears to be low (average 2.4%/year).
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