An 80-Year-Old Patient Who Has Persistent AF Takes Warfarin (Coumadin)for

An 80-year-old patient who has persistent AF takes warfarin (Coumadin) for anticoagulation therapy.The patient has an INR of 3.5.The primary care NP should consider:

A) lowering the dose of warfarin.
B) rechecking the INR in 1 week.
C) omitting a dose and resuming at a lower dose.
D) omitting a dose and administering 1 mg of vitamin K.

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