Correct Answer: A

Rationale: When a child has coarctation of the aorta, the nurse would expect to identify a weak radial pulse when taking the child's vital signs. Coarctation of the aorta results in a narrowing of the aorta, leading to reduced blood flow and a weakened pulse. An irregular heartbeat (Choice B) is less likely to be associated with coarctation of the aorta. Similarly, a bounding femoral pulse (Choice C) is not typically observed with this condition. An elevated radial blood pressure (Choice D) is less common as coarctation of the aorta usually causes decreased blood pressure in the lower extremities due to the aortic narrowing.

Correct Answer: A

Rationale: When caring for a child with cerebral palsy, skeletal traction is the least likely treatment intervention. Cerebral palsy primarily involves motor function impairments, and skeletal traction is not a typical intervention for this condition. Physical therapy is commonly used to improve movement and function, orthotics help with posture and mobility, and occupational therapy addresses activities of daily living. These interventions are more aligned with the needs of a child with cerebral palsy compared to skeletal traction, making it the least likely treatment option.

Correct Answer: A

Rationale: In coarctation of the aorta, there is narrowing of the aorta leading to decreased blood flow distal to the constriction. This results in a weak or delayed femoral pulse and a relatively weaker radial pulse compared to the femoral pulse. An irregular heartbeat (choice B) is not a typical finding in coarctation of the aorta. A bounding femoral pulse (choice C) would not be expected due to the decreased blood flow beyond the constriction. An elevated radial blood pressure (choice D) is not a common characteristic of coarctation of the aorta; instead, blood pressure may be higher in the upper extremities compared to the lower extremities due to the constriction.

Correct Answer: C

Rationale: In a severe asthma attack, the child is likely to develop respiratory acidosis. This occurs due to impaired respirations, leading to the retention of carbon dioxide and the formation of carbonic acid. Choice A is incorrect as metabolic alkalosis is not expected in this situation. Choice B is incorrect as respiratory alkalosis does not align with the scenario of impaired respirations in severe asthma attacks. Choice D is also incorrect as it describes metabolic acidosis, which is not typically associated with severe asthma attacks.

Correct Answer: B

Rationale: The correct answer is to use a soft toothbrush for oral care. Children with hemophilia have a decreased ability to form blood clots, leading to prolonged bleeding. Using a soft toothbrush helps prevent trauma to the gums and oral mucosa, reducing the risk of bleeding. Encouraging participation in contact sports (Choice A) is contraindicated in hemophiliac patients due to the high risk of injury and bleeding. Administering nonsteroidal anti-inflammatory drugs (Choice C) and aspirin (Choice D) should be avoided in hemophilia as they can further increase the risk of bleeding due to their antiplatelet effects.