One fresh frozen plasma (FFP) unit is requested for a 63-year-old man with a PMHx of atrial fibrillation and ischemic cardiomyopathy who is admitted for scheduled aorto-coronary bypass. He had two episodes of deep venous thrombosis/pulmonary embolism (DVT/PE) two years ago and since then he has been treated with Warfarin. He has no known allergies and no history of transfusion.