Correct Answer: B

Rationale: The correct priority action for the nurse is to start an IV infusion of normal saline. The client's presentation with lethargy, fruity-smelling breath, and high blood glucose level indicates diabetic ketoacidosis (DKA). IV fluids are essential to correct dehydration and help stabilize the client's condition. Checking for ketones in the urine is important, but fluid replacement takes precedence to address the immediate risk of dehydration and electrolyte imbalances. Administering insulin is also a crucial intervention for DKA, but fluid resuscitation should first be initiated.

Correct Answer: A

Rationale: The correct answer is A because a low red blood cell count may indicate anemia, which could pose risks during surgery. Anemia can affect oxygen delivery to tissues, impacting wound healing and overall surgical outcomes. The other options, such as white blood cell count, weight gain, and urine specific gravity, are less critical for immediate surgical considerations. White blood cell count is more related to infection risk postoperatively rather than immediate surgical risk. Weight gain reflects good overall growth but does not impact the immediate surgical situation. Urine specific gravity is more indicative of hydration status rather than immediate surgical risk.

Correct Answer: B

Rationale: Auscultating the heart and lungs while the infant is held is the most appropriate intervention to assess his current condition. This action allows the nurse to gather important information regarding the cardiovascular and respiratory status of the infant, which is crucial in evaluating his post-surgical recovery and overall well-being. Option A is incorrect as stimulating the infant to cry intentionally is not necessary and could cause distress. Option C is incorrect as the infant's growth is within the expected range, indicating no signs of failure to thrive. Option D is incorrect as obtaining a 12-lead electrocardiogram is not the initial intervention needed in this situation; assessing the heart and lungs through auscultation is more immediate and informative.

Correct Answer: A

Rationale: In a case of diabetic ketoacidosis (DKA), the primary feature is elevated blood glucose levels due to insulin deficiency. Additionally, ketones are increased in the blood and urine. Bicarbonate levels are usually low because of the metabolic acidosis that accompanies DKA. Therefore, the practical nurse should anticipate elevated blood glucose levels as a characteristic laboratory finding in a child admitted with DKA. Choice B is incorrect because serum ketones are increased in DKA. Choice C is incorrect because in DKA, urine glucose is typically high due to spillage of glucose into the urine. Choice D is incorrect because bicarbonate levels are usually low in DKA, not high.

Correct Answer: C

Rationale: Monitoring for signs of infection at the surgical site is crucial after an appendectomy as it helps in early detection and treatment of any potential complications. This intervention is essential for ensuring the child's proper healing and recovery post-surgery. Encouraging early ambulation is generally beneficial post-operatively but may not be the priority immediately after an appendectomy. Applying warm compresses to the incision site may not be indicated as it can increase the risk of infection. Providing a high-fiber diet immediately post-op is not recommended as the digestive system needs time to recover from surgery.