A nurse is teaching a newly licensed nurse about physiological changes in the digestive system that occur with aging.
The nurse should include older adults might experience which of the following physiological changes?
Increased muscle tone of the bowel.
Increased gastric acid production.
Decreased pH of the stomach.
Decreased intestinal peristalsis.
The Correct Answer is D
Choice A rationale
Aging usually leads to a decrease in muscle tone of the bowel rather than an increase, which can result in slower bowel movements and constipation.
Choice B rationale
Gastric acid production tends to decrease with age, not increase. This can affect the digestion and absorption of nutrients, and also increase the risk of stomach infections.
Choice C rationale
The pH of the stomach tends to become less acidic (increase) as one ages, not decrease. This is often due to the reduced production of gastric acid.
Choice D rationale
Decreased intestinal peristalsis is a common physiological change in older adults. This slowing down of the intestinal movements can lead to constipation and other digestive issues.
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Correct Answer is B
Explanation
Choice A rationale
White rice is a low-fiber food that is usually recommended to help manage diarrhea, as it can help firm up stools.
Choice B rationale
Caffeinated beverages can increase intestinal motility and secretions, leading to diarrhea. They can also be irritating to the gastrointestinal tract.
Choice C rationale
Low-fiber cereals are less likely to cause diarrhea and are often recommended for those with diarrhea because they are easy to digest.
Choice D rationale
Ripe bananas are low in fiber and high in potassium, which is beneficial for those with diarrhea as they help in firming up the stool.
Correct Answer is D
Explanation
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.