Pharmacological and Parenteral TherapiesQuestion 515 of 2368
A client who takes warfarin calls the clinic. Which report should the nurse identify as needing immediate provider notification?
- Red or tar-black stools
- Mild sneezing from seasonal allergies
- Slight thirst after exercise
- Occasional dry mouth
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Correct answer: Red or tar-black stools
Red or tar-black stools can mean gastrointestinal bleeding, a serious effect of warfarin.
Source: Nursing Pharmacology, 2nd edition (Open RN, Chippewa Valley Technical College, 2023), Cardiovascular & Renal Systems: Warfarin. Licensed under CC BY 4.0.
Practice the topic "Pharmacological and Parenteral Therapies"Questions last reviewed: 18 October 2026