A nurse is caring for a client with a history of GI bleeding, sickle cell disease, and a platelet count of 22,000/μL. The client is dehydrated and receiving dextrose 5% in half-normal saline solution at 150mL/hr. He reports severe bone pain and is scheduled to receive a dose of morphine sulfate. In administering the medication, the nurse should avoid which route（）
A. Oral.
B. IV.
C. IM.
D. Subcutaneous (SC).
参考答案：C
解析：
With a platelet count of 22,000/μL, the client bleeds easily. Therefore, the nurse should avoid using the IM route because the area is highly vascular and can bleed readily when penetrated by a needle. The bleeding can be difficult to stop. The client already has an IV access, so it would be the best route, especially because IV morphine is effective almost immediately. Oral and SC routes are preferred over IM, but they’re less effective for acute pain management than IV.