Correct Answer: C

Rationale: The correct answer is C: Provide frequent mouth care. In a patient with peritonitis who is NPO and thirsty, the priority is to maintain oral hygiene and provide comfort by moistening the mouth with frequent mouth care. This helps alleviate the sensation of thirst and maintains oral health. Increasing the IV infusion rate (choice A) may not address the patient's discomfort directly related to thirst. Using diversion activities (choice B) is not as critical as addressing the patient's immediate need for oral care. Giving ice chips every 15 minutes (choice D) is not recommended for a patient with peritonitis who is NPO, as it can lead to complications or worsen the condition.

Correct Answer: C

Rationale: Misoprostol (Cytotec) is useful in preventing NSAID-induced peptic ulcer disease.

Correct Answer: A

Rationale: For an 8 oz (240 ml) can of feeding, mix 60 ml of water to achieve the required concentration.

Correct Answer: C

Rationale: Herman, a 60 y.o. who follows a low-fat, high-fiber diet, has the fewest risk factors for colon cancer.

Correct Answer: D

Rationale: After a gastric vagotomy, the gastric pH increases as a result of reduced acid secretion.