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 B
Explanation
Choice A: This is incorrect. Potassium 4.0 mEq/L is a normal value and does not indicate heart failure.
Choice B: This is correct. Brain natriuretic peptide (BNP) is a hormone that is released by the heart when it is stretched or overloaded. A high level of BNP indicates that the heart is working harder than normal and may have heart failure. A normal BNP level is less than 100 pg/mL, so 275 pg/mL is elevated and suggestive of heart failure.
Choice C: This is incorrect. Sodium 140 mEq/L is a normal value and does not indicate heart failure.
Choice D: This is incorrect. Calcium 9.0 mg/dL is a normal value and does not indicate heart failure.
Correct Answer is D
Explanation
Choice A: This is incorrect. The client having difficulty reading large print indicates a need for an ophthalmology referral, not an occupational therapy referral. An ophthalmologist can assess and treat vision problems caused by stroke.
Choice B: This is incorrect. The client coughing while drinking from a straw indicates a need for a speech therapy referral, not an occupational therapy referral. A speech therapist can assess and treat swallowing problems caused by stroke.
Choice C: This is incorrect. The client being unable to bear her full weight while walking indicates a need for a physical therapy referral, not an occupational therapy referral. A physical therapist can assess and treat mobility problems caused by stroke.
Choice D: This is correct. The client becoming exhausted after performing activities of daily living indicates a need for an occupational therapy referral. An occupational therapist can assess and treat functional problems caused by stroke, such as fatigue, self-care, cognition, and leisure activities.
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