Correct Answer: B

Rationale: Postoperative arrhythmias are a common and potentially serious complication after cardiac surgery, making them a priority to monitor. Assessing for postoperative arrhythmias takes precedence over other assessments like checking nail beds for color and refill, auscultating for pulmonary congestion, or monitoring peripheral pulses as arrhythmias can have immediate and severe implications for the child's health.

Correct Answer: D

Rationale: The correct answer is D: 12 months. Whole milk should be introduced at 12 months to ensure the infant's digestive system can handle the increased fat content. Introducing whole milk before 12 months can lead to digestive issues and potential allergies. Choices A, B, and C are incorrect because transitioning to whole milk before 12 months is not recommended for infants due to their digestive system still developing and not being able to handle the higher fat content of whole milk.

Correct Answer: C

Rationale: The correct statement for a client who is lactose intolerant is to decrease dairy products since lactose intolerant individuals should avoid dairy to prevent symptoms like bloating, diarrhea, and gas. Increasing fiber (Choice A) or calories (Choice B) is not directly related to lactose intolerance. Decreasing vitamin D (Choice D) is not necessary as lactose intolerance is about the sugar in dairy, not vitamin D.

Correct Answer: D

Rationale: The correct answer is D: Mechanical soft diet. A mechanical soft diet is appropriate for clients with severe dysphagia as it helps reduce the risk of choking and aspiration by providing food that is easier to swallow. Choice A, NPO until dysphagia subsides, may be necessary initially but is not a long-term solution. Choice B, supplements via NG tube, may be considered if the client is unable to meet their nutritional needs orally, but it does not address the texture modification needed for dysphagia. Choice C, initiation of total parenteral nutrition, is typically reserved for clients who cannot tolerate any oral intake and is not the first-line option for dysphagia management.

Correct Answer: B

Rationale: The correct answer is B: Pupils fixed and dilated. Fixed and dilated pupils are a critical neurological sign that indicates severe neurological damage or brain herniation, posing a significant concern for the patient's condition. Flaccid paralysis (choice A) typically indicates lower motor neuron injury, while diminished spinal reflexes (choice C) and reduced sensory responses (choice D) may suggest various neurological issues but are not as acutely concerning as fixed and dilated pupils in this scenario.