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?

Choice A rationale:

The statement “I do my wheelchair exercises sitting in my chair” is correct. Wheelchair exercises are designed to be performed while seated in a wheelchair. They help to maintain muscle strength and flexibility, which is crucial for individuals with paralysis.

Choice B rationale:

The statement “I use a suppository every night to have a bowel movement” is also correct. Individuals with paralysis often have difficulty with bowel movements due to lack of muscle control. Using a suppository can stimulate the rectum and induce a bowel movement. Choice C rationale:

The statement “I need to catheterize myself twice a day” indicates a need for further teaching. Individuals with paralysis from the waist down following a spinal cord injury typically need to perform intermittent self-catheterization every 4-6 hours, not just twice a day. This helps to prevent urinary tract infections and bladder overdistension.

Choice D rationale:

The statement “I carry a water bottle with me because I drink a lot of water” is correct. Drinking plenty of water is important for overall health and can help to prevent urinary tract infections, which are common in individuals who self-catheterize.

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.