Reversal Agent for Warfarin Overdose

A 68-year-old patient with a history of atrial fibrillation is scheduled to receive their prescribed dose of warfarin. Prior to administration, the nurse reviews the patient's INR level, which is measured at 4.5. This is significantly above the therapeutic range for this medication. In order to ensure patient safety and prevent the risk of bleeding due to excessive anticoagulation, the nurse must take immediate action to address this critical lab value.

To mitigate the risk of an adverse event, the nurse should withhold the warfarin dose and notify the healthcare provider. However, there is also an important intervention that needs to be considered as a part of the protocol for this situation. The nurse must ensure that the emergency reversal agent is prepared and available for administration. The first step in this process involves recalling that the reversal agent for warfarin is __________.