A nurse is teaching a newly licensed nurse about obtaining a fecal occult blood test from a client.
Which of the following information should the nurse include?
Collect two stool specimens from the same area of the stool.
Use toilet paper to transfer the stool specimen.
Apply four drops of developing solution to each stool specimen.
Wait 30 seconds after applying the developing solution to obtain the results.
The Correct Answer is D
Choice A rationale
Collecting two stool specimens from the same area of the stool is incorrect because specimens should be taken from different areas to ensure a representative sample of the stool for testing.
Choice B rationale
Using toilet paper to transfer the stool specimen is not recommended as it can contaminate the sample and interfere with test results.
Choice C rationale
Applying four drops of developing solution to each stool specimen is incorrect. The usual procedure involves applying a specific number of drops as indicated by the test instructions, which may vary.
Choice D rationale
Waiting 30 seconds after applying the developing solution is correct. This waiting period allows the test to react and provide accurate results for the presence of occult blood.
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Correct Answer is C
Explanation
Choice A rationale
Replacing the external urinary catheter once each day is unnecessary. The catheter should be changed based on clinical judgment and manufacturer's guidelines to maintain hygiene.
Choice B rationale
Inserting the catheter into the client's urethra is incorrect for an external urinary catheter. External catheters are designed to be placed outside the body.
Choice C rationale
Applying a barrier cream to the client's perineal skin is correct. Barrier creams protect the skin from moisture and prevent skin breakdown and irritation caused by urine.
Choice D rationale
Connecting the catheter to continuous wall suction is not appropriate. External urinary catheters should be connected to a drainage bag for proper urine collection. .
Correct Answer is C
Explanation
Choice C rationale
The large intestine absorbs water and electrolytes from the remaining indigestible food matter, forming and eliminating solid waste (stool). This absorption process is vital for
maintaining the body's fluid and electrolyte balance.
Choice A rationale
The large intestine does not produce vitamin D; this occurs in the skin when exposed to sunlight. The large intestine’s primary functions are absorption and waste formation.
Choice B rationale
Preventing the reflux of food into the esophagus is the function of the lower esophageal sphincter, not the large intestine. The large intestine deals with waste processing rather than regulating esophageal function.
Choice D rationale
The secretion of digestive enzymes is a function of the pancreas, stomach, and small intestine. The large intestine does not secrete enzymes but focuses on absorbing water and electrolytes.