A nurse is reinforcing postoperative teaching with a client who has a prescription for enoxaparin to prevent deep vein thrombosis. Which of the following information should the nurse include in the teaching as a potential adverse effect of this medication?

A. Ringing in the ears: Ringing in the ears (tinnitus) is not a common adverse effect of enoxaparin. It is typically associated with medications like aspirin or other salicylates, not low-molecular-weight heparins like enoxaparin. B. Black, tarry stools: Black, tarry stools are a sign of gastrointestinal bleeding, which is a serious potential adverse effect of anticoagulant medications like enoxaparin. Clients taking enoxaparin should be instructed to report this symptom immediately, as it could indicate internal bleeding. C. Fine hand tremors: Fine hand tremors are not a known adverse effect of enoxaparin. They are more commonly associated with other medications, such as certain psychiatric drugs or neurologic conditions. D. Diarrhea: Diarrhea is not a common adverse effect of enoxaparin. While gastrointestinal symptoms can occur with many medications, it is not a primary concern or indication for discontinuing enoxaparin.