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 D
Explanation
Choice D rationale
Dark-colored urine is a common indicator of dehydration. When the body is dehydrated, urine becomes more concentrated, leading to darker color due to higher levels of waste products.
Choice A rationale
Cloudy urine is not typically associated with dehydration. It may indicate the presence of an infection, inflammation, or other medical conditions.
Choice B rationale
Urine osmolality of 200 mOsm/kg suggests diluted urine, which is contrary to the expectation in dehydration. Dehydration would typically result in higher urine osmolality as the kidneys conserve water.
Choice C rationale
Urine specific gravity of 1.015 falls within the normal range (1.005 to 1.030). In dehydration, specific gravity would be expected to be higher as the urine becomes more concentrated to conserve water.
Correct Answer is D
Explanation
Choice A rationale
Instilling ophthalmic medication directly on the cornea can cause irritation and discomfort. Medications should be administered in the conjunctival sac.
Choice B rationale
Asking the client to tightly squeeze their eyes shut after instillation can expel the medication, reducing its effectiveness. Gentle closing of the eyes is recommended.
Choice C rationale
Cleaning the eye from the outer canthus to the inner canthus is not the proper method. The correct method is to clean from the inner canthus to the outer canthus to avoid contaminating the inner eye.
Choice D rationale
Applying pressure to the nasolacrimal duct after instillation helps prevent the medication from draining into the nasolacrimal system, ensuring better absorption in the eye.