Effectiveness of the scheduled transfusion strategy for factor V deficiency with platelet dysfunction during coronary artery surgery

Background: Factor V deficiency is a rare disease, with an incidence of one in a million. Symptoms are mostly scant, and it is often diagnosed by the presence of an abnormality on PT-INR or APTT. In addition, no established therapy exists and platelet dysfunction is seldom found to be concomitant with this disease. Case Presentation: A 64-year-old man who had both factor V deficiency and platelet dysfunction had angina in the past year. Coronary surgery was required, and we successfully performed coronary artery bypass grafting under strategic planned platelet transfusion with additional adequate cryoprecipitates transfusion. No perioperative problems nor any postoperative major bleeding issues were observed. The postoperative course was also uneventful. Conclusion: Strategic planned platelet transfusion with the additional transfusion of an adequate amount of cryoprecipitates is thus considered to be feasible for cases presenting with factor V deficiency and platelet dysfunction.