Which action by the nurse is appropriate?
Correct Answer: A
Rationale: The appropriate action by the nurse is to observe the patient for abnormal bleeding. Warfarin is an anticoagulant medication, and one of its serious side effects is excessive bleeding. It is important for the nurse to monitor the patient closely for signs of abnormal bleeding, such as easy bruising, blood in urine or stool, or prolonged bleeding from cuts or wounds. This observation allows for early detection and intervention if any abnormal bleeding occurs. Notifications to the healthcare provider should also be made if abnormal bleeding is suspected. It is crucial not to make any changes to the warfarin dose or administer Vitamin K without a physician's order, as these actions can have serious consequences.