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 B
Explanation
Choice A rationale:
The statement “The pulse oximeter may not be accurate during periods of excessive movement” is correct. Pulse oximeters measure the amount of oxygen in the blood by shining light through the skin, and movement can cause the light to scatter, leading to inaccurate readings.
Choice B rationale:
The statement “We will inform the doctor if the pulse oximeter consistently reads 100%” indicates further instruction is needed. A pulse oximeter reading of 100% is not necessarily a cause for concern. It simply means that the hemoglobin is fully saturated with oxygen. However, if the oxygen level is consistently at 100%, it could indicate that the oxygen flow is too high and needs to be adjusted. It’s important to follow the healthcare provider’s instructions regarding the desired oxygen saturation level for the infant.
Choice C rationale:
The statement “The probe of the pulse oximeter can be attached to a finger or a toe” is correct. The probe of a pulse oximeter can indeed be attached to a finger, toe, or even an earlobe. The important thing is that it’s attached to a part of the body with good blood flow. Choice D rationale:
The statement “We will move the probe of the pulse oximeter every 24 hours” is correct. It’s important to move the probe periodically to prevent skin damage, such as pressure sores or burns, especially in infants who have delicate skin.
Correct Answer is A
Explanation
Choice A rationale:
Caffeinated beverages are known to cause diarrhea. Caffeine naturally occurs in many foods and drinks, including coffee and chocolate. It speeds up the digestive system and can cause loose stools. In addition, caffeine can irritate the stomach lining during digestion. Therefore, it’s important for the nurse to educate the patient about the potential effects of caffeinated beverages on their digestive system.
Choice B rationale:
Low-fiber cereal is not typically associated with triggering diarrhea. In fact, foods that are low in fiber can actually help firm up stools and are often recommended for individuals experiencing diarrhea. Therefore, while it’s not harmful, it’s not a primary concern for patients with diarrhea.
Choice C rationale:
White rice is another food that does not typically cause diarrhea. Similar to low-fiber cereal, white rice can help firm up stools and is often recommended for individuals experiencing diarrhea. It’s not a primary concern for patients with diarrhea.
Choice D rationale:
Ripe bananas do not typically cause diarrhea. They are actually part of the BRAT diet (Bananas, Rice, Applesauce, Toast), which is often recommended for individuals experiencing diarrhea. Therefore, it’s not a primary concern for patients with diarrhea.
In conclusion, when educating a patient about food and drinks that can trigger diarrhea, the nurse should include caffeinated beverages as they can potentially cause diarrhea. However, low-fiber cereal, white rice, and ripe bananas are not typically associated with triggering diarrhea.
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