Short-bowel syndrome usually occurs when:

Correct Answer: B

Rationale: Short-bowel syndrome usually occurs when more than 50% of the small intestine is surgically removed. This condition results in malabsorption of nutrients and fluids due to the reduced length of the small intestine. Choice A is incorrect because the contraction of longitudinal muscles does not lead to short-bowel syndrome. Choice C is incorrect as short-bowel syndrome is primarily related to the small intestine, not the large intestine. Choice D is incorrect since decreased transit time due to infection or drugs is not a direct cause of short-bowel syndrome.

Correct Answer: C

Rationale: The correct answer is C. This statement is true because both prescription and over-the-counter medications, as well as herbal remedies, can interact with food. Choice A is incorrect because over-the-counter medications can also interact with food or nutrients. Choice B is incorrect as not all prescription medications have significant interactions with food. Choice D is incorrect because natural herbal products can also have side effects and interactions with other substances.

Correct Answer: D

Rationale: The correct answer is D, administering phosphate binders. Phosphate binders are a primary intervention for managing hyperphosphatemia as they help by binding phosphorus in the gut, preventing its absorption. Increasing calcium intake (choice A) or phosphorus intake (choice B) would exacerbate hyperphosphatemia. Decreasing calcium intake (choice C) is not a primary intervention for managing high phosphorus levels.

Correct Answer: A

Rationale: The correct answer is A, weight loss. Metformin is commonly associated with weight loss as a side effect rather than weight gain. Metformin works by decreasing glucose production in the liver and improving insulin sensitivity, which can lead to weight loss. Choices B, C, and D are incorrect because weight gain, drowsiness, and hypertension are not typically common side effects of metformin.

Correct Answer: A

Rationale: A patient with a history of gout should avoid foods high in purines, which can exacerbate gout attacks. Red meat is particularly high in purines, so it is the type of food that should be avoided. Chicken and fish are lower in purines compared to red meat, making them better choices for individuals with gout. Dairy products are generally not associated with triggering gout attacks, so they can be consumed in moderation by patients with gout.