A Patient Who Is Taking Warfarin (Coumadin) Has Just Vomited

A patient who is taking warfarin (Coumadin) has just vomited blood. The nurse notifies the provider, who orders lab work revealing a PT of 42 seconds and an INR of 3.5. The nurse will expect to administer:

A) phytonadione (vitamin K₁) 1 mg IV over 1 hour.
B) phytonadione (vitamin K₁) 2.5 mg PO.
C) protamine sulfate 20 mg PO.
D) protamine sulfate 20 mg slow IV push.