mrcem2-0844

A 65 year old is brought to the emergency department due to confusion and mild fever. It is suspected that the patient has a urinary tract infection. The patient’s family member informs you that the patient takes warfarin for atrial fibrillation but is unsure if they have taken it correctly due to confusion. An INR test is conducted and the result comes back as 8.2.

What would be the most suitable course of action?