For rapid reversal of warfarin in emergencies, which blood product is typically used?

• A. Platelet concentrates
• B. Fresh Frozen Plasma
• C. Packed red blood cells
• D. Cryoprecipitate

Answer: (B)

Warfarin slows the production of clotting factors II, VII, IX, and X, so reversing its effect quickly means restoring those factors in the circulation. Fresh Frozen Plasma supplies all of these vitamin K–dependent factors right away, enabling rapid correction of coagulopathy in an emergency. Vitamin K alone helps the liver resume production, but that takes several hours to days, not suitable for urgent reversal. Other options don’t replenish the full set of factors needed to restore normal coagulation quickly: platelets address platelet defects, red blood cells improve oxygen delivery, and cryoprecipitate mainly provides fibrinogen and some other factors but not the full vitamin K–dependent factors. Therefore, Fresh Frozen Plasma is the typical choice for rapid warfarin reversal in emergencies.