Correct Answer: B

Rationale: The correct answer is B because nystatin should be given for the full 7 days even if the lesions are no longer present. Continuing the treatment for the prescribed duration ensures complete eradication of the fungal infection. Choice A is incorrect as stopping the medication prematurely may lead to the reoccurrence of thrush. Choice C is inaccurate as nystatin is not just for comfort but for effective treatment. Choice D is incorrect as refilling the medication for a second week without medical advice may lead to unnecessary prolonged use and potential side effects.

Correct Answer: B

Rationale: The correct answer is B: Reduce serum ammonia levels. Lactulose is used to reduce serum ammonia levels in clients with cirrhosis, helping to prevent hepatic encephalopathy. Lactulose works by acidifying the colon, trapping ammonia for excretion. Decreasing blood glucose levels (choice A) is not the primary effect of lactulose. Increasing platelet count (choice C) and lowering serum bilirubin levels (choice D) are not direct effects of lactulose in the management of cirrhosis.

Correct Answer: B

Rationale: The correct action to prevent complications during the infusion of potassium chloride is to monitor the infusion site for signs of infiltration. Rapid administration can lead to adverse effects, including cardiac arrhythmias. Using a syringe pump is not typically necessary for this infusion. Flushing the IV line with normal saline is a good practice but not directly related to preventing complications specifically during the infusion of potassium chloride.

Correct Answer: D

Rationale: After rehydration, it is important to offer foods that are nonirritating to the bowel to the child. Bananas and rice are considered the best options as they are least likely to irritate the gastrointestinal tract. Apricots, peaches, and applesauce are fruits that may cause GI irritation, while milk, including chocolate milk, can also be irritating to the bowel. Therefore, the optimal choice for a child recovering from diarrhea would be bananas and rice.

Correct Answer: B

Rationale: The correct answer is B because nursing interventions for cognitively impaired children prioritize promoting loving interactions with family. This support helps in creating a nurturing environment that contributes to the child's well-being and development. Choice A is not the priority as good nutrition, though important, may not address the immediate emotional and social needs of the child. Choice C is vague and does not specify how stimulation will be provided. Choice D, contact with peers, is also valuable but not as crucial as the primary relationships and interactions within the family unit for a cognitively impaired child.