A Patient Has Had Recent Mechanical Heart Valve Surgery and Is

question 8

Multiple Choice

A patient has had recent mechanical heart valve surgery and is receiving anticoagulant therapy.While monitoring the patient's laboratory work,the nurse interprets that the patient's international normalized ratio (INR) level of 3 indicates that:

• A) the patient is not receiving enough warfarin to have a therapeutic effect.
• B) the patient's warfarin dose is at therapeutic levels.
• C) the patient's intravenous heparin dose is dangerously high.
• D) the patient's intravenous heparin dose is at therapeutic levels.