A nurse in a provider’s office performs a fecal occult blood test with a positive result on a client.
Which of the following clients may have a false positive result?
A. A client who has a venous stasis ulcer.
A client who has peripheral hematomas.
A client who underwent a barium swallow study.
A client who takes an iron supplement.
The Correct Answer is D
Correct answer: C
A. A client who has a venous stasis ulcer: This is less likely to cause a false positive result. While ulcers can bleed, the fecal occult blood test is designed to detect small amounts of blood in the stool, not necessarily blood from other sources like venous stasis ulcers.
B. A client who has peripheral hematomas: Peripheral hematomas are typically not related to the fecal occult blood test. They generally wouldn’t affect the results unless there was significant bleeding or if the hematomas were a result of an underlying bleeding disorder.
C. A client who underwent a barium swallow study: This is the most likely to cause a false positive result. Barium used in the study can sometimes appear as a false positive on the test due to its interference with the chemical reactions used to detect blood.
D. A client who takes an iron supplement: Iron supplements can actually cause a false negative result rather than a false positive because they may darken the stool and mask the presence of blood.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Correct answer: C
A. A client who has a venous stasis ulcer: This is less likely to cause a false positive result. While ulcers can bleed, the fecal occult blood test is designed to detect small amounts of blood in the stool, not necessarily blood from other sources like venous stasis ulcers.
B. A client who has peripheral hematomas: Peripheral hematomas are typically not related to the fecal occult blood test. They generally wouldn’t affect the results unless there was significant bleeding or if the hematomas were a result of an underlying bleeding disorder.
C. A client who underwent a barium swallow study: This is the most likely to cause a false positive result. Barium used in the study can sometimes appear as a false positive on the test due to its interference with the chemical reactions used to detect blood.
D. A client who takes an iron supplement: Iron supplements can actually cause a false negative result rather than a false positive because they may darken the stool and mask the presence of blood.
Correct Answer is D
Explanation
The correct answer is choice D. Unequal height of the shoulders.
This is because scoliosis is a condition characterized by sideways curvature of the spine that can cause asymmetry of the shoulders, shoulder blades, and hips.
A scoliosis screening is a test that checks for this asymmetry by having the child bend forward from the waist and looking for any prominence of the rib cage or the spine.
Choice A is wrong because expansion of the upper intercostal spaces is not a sign of scoliosis, but rather a sign of hyperinflation of the lungs due to conditions such as asthma or emphysema.
Choice B is wrong because increased convex curve of the cervical spine is not a sign of scoliosis, but rather a sign of kyphosis, which is an excessive outward curvature of the upper spine.
Choice C is wrong because increased concave curve of the thoracic spine is not a sign of scoliosis, but rather a sign of lordosis, which is an excessive inward curvature of the lower spine.
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