PN Adult Medical Surgical 2023 | Nurselytic

Correct Answer: B

Rationale: Fecal occult blood tests detect hidden blood in stool, often for colorectal cancer screening, but false positives can skew results. Ibuprofen, an NSAID, irritates the gastric mucosa, causing microbleeding that may appear in stool, unrelated to colonic sources. Citrus juice doesn't affect heme detection vitamin C may cause false negatives, not positives, and 3 days prior minimizes impact. A hemorrhoidectomy 1 year ago is healed, unlikely to bleed now unless complications persist, which isn't suggested. Breast cancer history doesn't influence gastrointestinal bleeding unless metastatic, an unlikely scenario here. Ibuprofen's known GI side effects align with testing guidelines (e.g., avoiding NSAIDs pre-test), making it the most likely false-positive trigger, requiring the nurse to clarify timing and adjust interpretation.

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