A nurse is caring for a patient who has been prescribed a stool guaiac test.
The patient inquires about the purpose of the test.
How should the nurse respond?
The stool guaiac test checks for bacteria in the feces.
The stool guaiac test checks for fat in the feces.
The stool guaiac test checks for parasites in the feces.
The stool guaiac test checks for blood in the feces.
The Correct Answer is D
Choice A rationale:
The stool guaiac test does not check for bacteria in the feces. This test is used to detect hidden (occult) blood in a stool sample. It is the most common type of fecal occult blood test (FOBT)1.
Choice B rationale:
The stool guaiac test does not check for fat in the feces. The presence of fat in the feces is usually checked by a different test called a fecal fat test. The stool guaiac test is specifically designed to detect the presence of hidden blood in the stool.
Choice C rationale:
The stool guaiac test does not check for parasites in the feces. Parasites are typically detected using a stool ova and parasites (O&P) test. The stool guaiac test is used to detect hidden blood in the stool, which could be an indication of various conditions, including colon cancer or polyps in the colon or rectum.
Choice D rationale:
The stool guaiac test checks for hidden blood in the feces. This is the correct answer. The test can find blood even if you cannot see it yourself. Occult blood in the stool may indicate colon cancer or polyps in the colon or rectum, though not all cancers or polyps bleed. If blood is detected through a fecal occult blood test, additional tests may be needed to determine the source of the bleeding. The stool guaiac test can only detect the presence or absence of blood — it can’t determine what’s causing the bleeding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The correct answer is choice C.
Choice A rationale:
The nurse applies the sterile drape after cleaning the perineal area. This is correct because the perineal area should be cleaned before applying the sterile drape. Applying the drape first could potentially introduce bacteria to the catheter during insertion, increasing the risk of a urinary tract infection.
Choice B rationale:
The nurse lubricates the indwelling urinary catheter. This is a correct procedure as it helps to minimize discomfort and trauma during catheter insertion.
Choice C rationale:
The nurse separates the patient’s labia with her dominant hand. This is also a correct procedure. The nurse should use her non-dominant hand to separate the labia and expose the urethral meatus, and then use her dominant hand to insert the catheter.
Choice D rationale:
The nurse provides perineal care prior to inserting the urinary catheter. This is a correct procedure. Providing perineal care before inserting a urinary catheter is important to reduce the risk of introducing bacteria into the urinary tract. It’s part of maintaining strict aseptic technique during insertion.
Correct Answer is A
Explanation
Choice A rationale:
Muscle twitching is a symptom of oxygen toxicity. Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen (O2) at increased partial pressures. Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and eyes. Central nervous system symptoms can include muscle twitching.
Choice B rationale:
Redness of the face is not typically associated with oxygen toxicity. Oxygen toxicity primarily affects the central nervous system, lungs, and eyes. It does not typically cause redness of the face.
Choice C rationale:
Swelling around the eyes is not a common symptom of oxygen toxicity. The primary effects of oxygen toxicity are seen in the central nervous system, lungs, and eyes. However, this does not typically manifest as swelling around the eyes.
Choice D rationale:
A metallic taste in the mouth is not a known symptom of oxygen toxicity. Oxygen toxicity is a condition that results from the harmful effects of breathing molecular oxygen (O2) at increased partial pressures. It primarily affects the central nervous system, lungs, and eyes, but a metallic taste in the mouth is not a recognized symptom.
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