A nurse is providing discharge instructions to a client who has been prescribed warfarin therapy. Which finding should the client be taught to report to the health-care provider immediately?
Occasional dry mouth on waking
Mild fatigue at the end of the day
Dark, tarry stools
Slight ankle swelling after standing for long periods
Dark, tarry stools are a potential sign of gastrointestinal bleeding, a serious adverse effect of anticoagulant therapy. Prompt reporting allows evaluation of the client's coagulation status and prevents life-threatening hemorrhage. Mild fatigue, ankle swelling after prolonged standing, or a dry mouth are not typical indicators of bleeding related to warfarin and do not require urgent evaluation.
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