Cost effectiveness of epoetin-alpha to augment preoperative autologous blood donation in elective cardiac surgery

Objective: The objective of this study was to assess the cost effectiveness of using epoetin-alpha: (erythropoietin) to augment preoperative autologou s donation (PAD) of blood prior to elective cardiac surgery. Design and setting: We designed a decision-analytic model incorporating the risk of receiving allogeneic blood, the costs of blood products, the likel ihood of developing transfusion-related diseases, the costs of transfusion- related diseases and their impact on life expectancy, and the effect of epo etin-alpha on the probability of transfusion. Interventions: The efficacy of epoetin-alpha was derived from data from a m etaanalysis of published randomised trials comparing the use of epoetin-alp ha to augment PAD with the use of PAD alone. Estimates for the other parame ters were obtained by a systematic review of the literature. Main outcome measures and results: The use of epoetin-alpha reduced the pro portion of patients receiving allogeneic transfusions by 60% (from 31.6 to 12.7%). However, this led to only a modest benefit of 0.000035 life years g ained per patient and an incremental cost per life year gained of $Can44.6 million (1998 Canadian dollars). A detailed sensitivity analysis confirmed that the cost-effectiveness ratio was larger than that which is generally c onsidered acceptable. Conclusions: Our study indicates that the use of epoetin-alpha to reduce pe rioperative allogeneic transfusions in cardiac surgery is not cost effectiv e.