The emergency department nurse received a client on warfarin (Coumadin) who has an International Normalized Ratio (INR) of 1.5. Which intervention should the nurse implement? 1. Prepare to administer...

The emergency department nurse received a client on warfarin (Coumadin) who has an International Normalized Ratio (INR) of 1.5. Which intervention should the nurse implement?

1. Prepare to administer protamine sulfate, an antidote.

2. Document the laboratory result and take no action.

3. Prepare to administer AquaMEPHYTON (vitamin K).

4. Notify the client’s health-care provider.