• J. Am. Coll. Cardiol. · Jun 1998

    Multicenter Study

    Cost-effectiveness analysis of invasive and noninvasive tests in high risk patients treated with amiodarone after acute myocardial infarction.

    • R F Pedretti, G B Migliori, V Mapelli, G Daniele, P J Podrid, and R Tramarin.
    • Fondazione Salvatore Maugeri, Care and Research Institute, Administrative Department, Rehabilitation Institute, Tradate, Italy. tradate@fsm.it
    • J. Am. Coll. Cardiol. 1998 Jun 1; 31 (7): 1481-9.

    ObjectivesWe sought to evaluate 1) the cost-effectiveness of amiodarone therapy in postinfarction patients; and 2) the influence of alternative diagnostic strategies (noninvasive only vs. noninvasive and electrophysiologic testing) on survival benefit and cost-effectiveness ratio of amiodarone therapy.BackgroundThe cost-effectiveness of amiodarone therapy in postinfarction patients is still unknown, and no study has determined which diagnostic strategy should be used to maximize amiodarone survival benefit while improving its cost-effectiveness ratio.MethodsWe designed a postinfarction scenario wherein heart rate variability analysis on 24-h Holter monitoring was used as a screening test for 2-year amiodarone therapy in a cohort of survivors (mean age 57 years) of a recent myocardial infarction. Three different therapeutic strategies were compared: 1) no amiodarone; 2) amiodarone in patients with depressed heart rate variability; 3) amiodarone in patients with depressed heart rate variability and a positive programmed ventricular stimulation. Total variable costs and quality-adjusted life expectancy during a 20-year period were predicted with use of a Markov simulation model. Costs and charges were calculated with reference to an Italian and American hospital.ResultsAmiodarone therapy in patients with depressed heart rate variability and a positive programmed ventricular stimulation was dominated by a blend of the two alternatives. Compared with the no-treatment strategy, the incremental cost-effectiveness ratio of amiodarone therapy in patients with depressed heart rate variability was $10,633 and $39,422 per gained quality-adjusted life-year using Italian costs and American charges, respectively.ConclusionsCompared with a noninterventional option, amiodarone prescription in all patients with depressed heart rate variability seems to be a more appropriate approach than the alternative based on the combined use of heart rate variability and electrophysiologic study.

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