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 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.
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.