A nurse is teaching a class about medication interactions.
The nurse should include that iron preparations should be administered with which of the following?
Cheese.
Antacids containing magnesium.
Orange juice.
Milk.
The Correct Answer is C
Choice A rationale
Cheese is high in calcium, which can interfere with the absorption of iron by binding to it in the digestive tract, making it less available for absorption.
Choice B rationale
Antacids containing magnesium can interfere with the absorption of iron by increasing the pH of the stomach, reducing the solubility and absorption of iron.
Choice C rationale
Orange juice is high in vitamin C, which can enhance the absorption of iron by reducing it to a form that is more easily absorbed by the body.
Choice D rationale
Milk contains calcium, which can inhibit the absorption of iron. Calcium competes with iron for absorption in the intestines, leading to reduced iron absorption.
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Correct Answer is D
Explanation
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.
Correct Answer is D
Explanation
Choice D rationale
Intravenous (IV) administration has the fastest rate of absorption because the medication is delivered directly into the bloodstream, bypassing the absorption barriers of the digestive
system or muscle tissue. This ensures rapid onset of action.
Choice A rationale
Enteral administration involves the gastrointestinal tract, including oral and feeding tube methods. Absorption is slower as the medication passes through the digestive system before
entering the bloodstream.
Choice B rationale
Intramuscular (IM) administration involves injecting the medication into muscle tissue, where it is absorbed into the bloodstream. Absorption is quicker than enteral routes but slower
compared to IV administration.
Choice C rationale
Topical administration involves applying medication to the skin or mucous membranes. Absorption is generally slower and is intended for local or systemic effects, depending on the medication.