The effects of clopidogrel (Plavix) can be reversed with

The effects of clopidogrel (Plavix) can be reversed with

• A. Fresh frozen plasma
• B. Protamine
• C. Aprotinin
• D. None of the above

Answer: (D)

Clopidogrel works by irreversibly blocking the P2Y12 receptor on platelets, so the drug’s antiplatelet effect lasts for the life of the platelet (about a week). Because the action is on the platelets themselves, reversing it isn’t achieved by infusing plasma factors or by agents that target coagulation pathways. Fresh frozen plasma provides clotting factors but does not restore normal platelet function compromised by P2Y12 blockade. Protamine reverses heparin, not clopidogrel. Aprotinin is an antifibrinolytic and does not reverse antiplatelet effects. The only way to rapidly restore platelet function is to replace platelets, typically with a platelet transfusion. Since platelet transfusion isn’t listed among the options, none of the above correctly reverses clopidogrel’s effect.

Clopidogrel works by irreversibly blocking the P2Y12 receptor on platelets, so the drug’s antiplatelet effect lasts for the life of the platelet (about a week). Because the action is on the platelets themselves, reversing it isn’t achieved by infusing plasma factors or by agents that target coagulation pathways. Fresh frozen plasma provides clotting factors but does not restore normal platelet function compromised by P2Y12 blockade. Protamine reverses heparin, not clopidogrel. Aprotinin is an antifibrinolytic and does not reverse antiplatelet effects. The only way to rapidly restore platelet function is to replace platelets, typically with a platelet transfusion. Since platelet transfusion isn’t listed among the options, none of the above correctly reverses clopidogrel’s effect.