A nurse is reviewing the results of a client's fecal occult blood screening test. Which of the following findings from the client's history should the nurse identify as potentially causing a false-positive result?
The client takes ibuprofen for headaches.
The client had a hemorrhoidectomy 1 year ago.
The client has a history of breast cancer.
The client consumed citrus juice 3 days before the test.
The Correct Answer is A
Choice A reason: Taking ibuprofen or other nonsteroidal anti-inflammatory drugs (NSAIDs) can cause a false-positive result on a fecal occult blood screening test, as they can irritate the gastrointestinal mucosa and cause bleeding.
Choice B reason: Having a hemorrhoidectomy 1 year ago is unlikely to cause a false-positive result on a fecal occult blood screening test, as hemorrhoids are usually a source of bright red blood that can be seen with naked eye, not occult blood that requires chemical detection.
Choice C reason: Having a history of breast cancer is not related to a false-positive result on a fecal occult blood screening test, as breast cancer does not affect the gastrointestinal tract or cause bleeding in stool.
Choice D reason: Consuming citrus juice 3 days before the test is not likely to cause a false-positive result on a fecal occult blood screening test, as citrus juice does not contain any substances that can interfere with the chemical reaction of the test. However, consuming red meat, raw vegetables, vitamin C supplements, or iron supplements within 3 days before the test can cause false-negative results, as they can mask or degrade occult blood in stool.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A: This is correct. Phototherapy is a treatment option for psoriasis that involves exposing the skin to ultraviolet light, which can reduce inflammation and slow down the growth of skin cells.
Choice B: This is incorrect. Oil-based ointment is not recommended for psoriasis, as it can clog the pores and worsen the condition.
Choice C: This is incorrect. Dermabrasion is a cosmetic procedure that involves removing the outer layer of skin with a rotating device, which can cause bleeding, infection, and scarring.
Choice D: This is incorrect. Benzoyl peroxide is an acne medication that can dry out and irritate the skin, which can aggravate psoriasis.
Correct Answer is C
Explanation
Choice A: This is incorrect because blood glucose 98 mg/dL is within the normal range of 70 to 110 mg/dL. The nurse does not need to notify the provider for this value.
Choice B: This is incorrect because BUN 18 mg/dL is within the normal range of 10 to 20 mg/dL. The nurse does not need to notify the provider for this value.
Choice C: This is correct because hemoglobin 8.6 g/dL is below the normal range of 12 to 18 g/dL. The nurse should notify the provider for this value as it indicates anemia, which can be caused by blood loss during surgery or impaired bone marrow function.
Choice D: This is incorrect because potassium 3.5 mEq/L is within the normal range of 3.5 to 5.0 mEq/L. The nurse does not need to notify the provider for this value.
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