Factor VII Deficiency in Patients Receiving Chronic Packed Cell Transfusions.
2020
Acquired factor VII deficiency is a rare coagulopathy that has not been reported in transfusion-dependent patients so far. In this study, we reviewed files of 26 transfusion-dependent patients for coagulation profiles, factor V levels, factor VII levels, possible environmental factors influencing factor VII levels, and bleeding history. In 26 of 29 patients (89.6%), we found mild factor VII deficiency (<60%) with levels ranging between 35% and 56%. Bleeding history was unremarkable. We concluded that transfusion-dependent patients may have mild factor VII deficiency with no bleeding tendency under physiological conditions.
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