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  • Title: Potential cost effectiveness of intravenous tissue plasminogen activator versus streptokinase for acute myocardial infarction.
    Author: Goel V, Naylor CD.
    Journal: Can J Cardiol; 1992; 8(1):31-8. PubMed ID: 1617509.
    Abstract:
    OBJECTIVE: An economic evaluation of the potential incremental benefits of intravenous tissue plasminogen activator (tPA) versus streptokinase (SK) for treatment of acute myocardial infarction. DESIGN: Cost effectiveness analysis from a third-party payer perspective (Ontario Ministry of Health). ECONOMIC INPUTS: Fully allocated costs for cardiovascular procedures and hospitalization for myocardial infarction were obtained anonymously for four Ontario teaching hospitals and converted to 1988 Canadian dollars. Professional charges were taken from the provincial health insurance fee schedule and drug costs obtained from the manufacturers. CLINICAL INPUTS: The baseline analysis was for nonelderly patients with uncomplicated myocardial infarctions; sensitivity analyses allowed extrapolation to higher risk subgroups. Short and longer term mortality and short term invasive procedure rates were estimated using data from clinical trials. MAIN RESULTS: If tPA achieves a 1% short term mortality advantage over SK with no advantages for other survivors, cost per life-year gained can be comparable to other cardiovascular interventions at $58,600. In the absence of immediate survival advantages, but assuming greater left ventricular preservation, the constant annual hazard rate advantage must be about 0.5% per year for competitive cost effectiveness ratios. CONCLUSIONS: A full range of projections is presented to help guide the policy decisions that will arise in the wake of the Global Utilization of SK and tPA for Occluded Coronary Arteries (GUSTO) trial. The analysis also illustrates the general importance of considering longer term effects of in-hospital therapies for acute myocardial infarction.
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