Correct Answer: B

Rationale: During an acute flare-up of diverticulitis, a low-residue diet is recommended. This diet helps reduce bowel movements and minimizes irritants in the colon, which can help alleviate symptoms and promote healing. High-fiber diets, like choice A, are typically recommended for diverticulosis prevention but may exacerbate symptoms during a flare-up due to increased bulk in the stool. Low-fat (choice C) and high-protein (choice D) diets are not specifically indicated for diverticulitis flare-ups.

Correct Answer: D

Rationale: Patients with chronic alcoholism are most likely to develop a deficiency in Vitamin B1 (thiamine) due to poor dietary intake and impaired absorption. This deficiency can lead to conditions like Wernicke's encephalopathy and Korsakoff's syndrome. While deficiencies in other vitamins can also occur in chronic alcoholism, Vitamin B1 deficiency is more commonly associated with this condition, making it the most likely nutrient deficiency in these patients. Therefore, the correct answer is Vitamin B1 (Choice D). Deficiencies in Vitamin C (Choice A), Vitamin D (Choice B), and Vitamin B12 (Choice C) can also be seen in patients with chronic alcoholism, but they are not as commonly linked to this condition compared to Vitamin B1 deficiency.

Correct Answer: A

Rationale: Mild tenderness, a light diet initially, and gas or bloating are expected after a colonoscopy.

Correct Answer: D

Rationale: In patients with chronic alcoholism, the most likely nutrient deficiency is Vitamin B1 (thiamine), not Vitamin B12. Chronic alcoholism often leads to Vitamin B1 deficiency, causing conditions like Wernicke's encephalopathy. While other vitamin deficiencies can also occur in chronic alcoholism, such as Vitamin C and Vitamin D, Vitamin B1 deficiency is more commonly associated with alcoholism.

Correct Answer: D

Rationale: The correct answer is D, Hypokalemia. Diuretics commonly cause hypokalemia due to increased urinary excretion of potassium. Hyperkalemia (Choice A) is the opposite, characterized by high potassium levels and is not typically associated with diuretics. Hypercalcemia (Choice B) is an elevated calcium level, which is not a common side effect of diuretics. Hypomagnesemia (Choice C) is low magnesium levels, which can be a side effect of diuretics, but the most common electrolyte imbalance associated with diuretics is hypokalemia.