ATI PN Fundamentals 2020 with NGN Updated 2024
ATI PN Fundamentals 2020 with NGN Updated 2024 ( 41 Questions)
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.
Choice A is wrong because a client who has a venous stasis ulcer does not have bleeding in the gastrointestinal tract, which is what the FOBT detects.
Choice B is wrong because a client who has peripheral hematomas also does not have gastrointestinal bleeding.
The correct answer is choice C. A client who underwent a barium swallow study may have a false positive result on a fecal occult blood test (FOBT).
Choice D is wrong because a client who takes an iron supplement does not have a false positive result on a FOBT, but may have a false negative result.
This is because iron can mask the presence of blood in the stool.
The correct answer is choice C. A client who underwent a barium swallow study may have a false positive result on a fecal occult blood test (FOBT).
This is because barium can interfere with the chemical reaction of the test and cause it to turn blue, indicating blood.
A client should avoid having a FOBT for at least four days after a barium swallow study.
Choice A is wrong because a client who has a venous stasis ulcer does not have bleeding in the gastrointestinal tract, which is what the FOBT detects.
Choice B is wrong because a client who has peripheral hematomas also does not have gastrointestinal bleeding.
Choice D is wrong because a client who takes an iron supplement does not have a false positive result on a FOBT, but may have a false negative result.
This is because iron can mask the presence of blood in the stool.