Điều dưỡng chuyên khoa chống đông xem xét một cuộc gọi theo dõi. Những phát hiện nào cần theo dõi ngay lập tức? Làm nổi bật các phát hiện cho thấy chảy máu hoặc sử dụng warfarin không an toàn.

Nurses' Notes 0915: The client takes warfarin for atrial fibrillation and calls before the scheduled clinic visit. The client reports a black, tarry bowel movement this morning without taking an iron supplement. The client eats about the same portion of leafy green vegetables each week. For knee pain, the client has taken over-the-counter ibuprofen every morning for the past four days. Warfarin is taken at 1900 each evening using a weekly medication organizer. Yesterday, the client slipped on wet stairs, struck the back of the head, and did not seek care. A soft toothbrush and electric razor are used for daily hygiene. The laboratory portal shows today's INR is 5.8, compared with a prescribed target range of 2 to 3. The client wears a medical-alert bracelet when away from home. A small forearm bruise has remained the same size for three days, is painless, and is becoming lighter. The client recalls missing Monday's dose and states, two warfarin tablets were taken together on Tuesday morning. The client denies chest pain or shortness of breath. The nurse instructs the client not to take additional medication until the urgent anticoagulation plan is confirmed.