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 reason: Changed mental status, such as confusion, agitation, or delirium, can be a sign of a bladder infection in older adults, as they may not have the typical symptoms of dysuria, frequency, or urgency.
Choice B reason: WBC count 9,000/mm³ is within the normal range of 4,500 to 11,000/mm³ and does not indicate an infection.
Choice C reason: Diminished reflexes are not related to a bladder infection and may be due to aging, neurological disorders, or medication side effects.
Choice D reason: Temperature 37.3°C (99.1°F) is slightly elevated but not indicative of a bladder infection. Older adults may have lower baseline temperatures and may not develop fever in response to an infection.
Correct Answer is C
Explanation
Choice c: Confusion is a finding that the nurse should anticipate in an older adult client who has cystitis, which is inflammation of the bladder caused by a bacterial infection. Confusion can be a sign of sepsis or delirium, which are common complications of urinary tract infections in older adults.
Choice a is not correct because hypothermia is not a finding that the nurse should anticipate in an older adult client who has cystitis. Hypothermia can occur in older adults due to impaired thermoregulation, but it is not related to cystitis.
Choice b is not correct because referred pain in the right shoulder is not a finding that the nurse should anticipate in an older adult client who has cystitis. Referred pain in the right shoulder can indicate gallbladder disease, but it is not related to cystitis.
Choice d is not correct because orange-colored urine is not a finding that the nurse should anticipate in an older adult client who has cystitis. Orange-colored urine can be caused by certain medications, foods, or dehydration, but it is not related to cystitis.
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