Pediatric Practice Exam HESI

Correct Answer: B

Rationale: Point tenderness is the most reliable indicator of a possible fracture in a child. It refers to localized pain at a specific point, indicating a potential bone injury. Lack of spontaneous movement (Choice A) is non-specific and can be due to various reasons. Bruising (Choice C) may be present in fractures but is not as specific as point tenderness. Inability to bear weight (Choice D) can also be seen in fractures but may not always be present, making it less reliable compared to point tenderness.

Correct Answer: D

Rationale: Severe joint pain is a classic symptom of rheumatic fever, resulting from inflammation of the joints. Rheumatic fever primarily affects the joints, heart, skin, and the central nervous system. Jaundice (Choice A) is not typically associated with rheumatic fever. Peeling skin on the hands and feet (Choice B) is more characteristic of conditions like Kawasaki disease. While high fever (Choice C) can be present in rheumatic fever, it is not as specific or characteristic as severe joint pain.

Correct Answer: C

Rationale: The correct answer is to look along the scalp line for white dots (nits) when checking for head lice. White dots are indicative of head lice infestation. Itching alone, as mentioned in choice A, is not a reliable indicator of head lice. Choice B is irrelevant as it refers to checking for ear mites in a dog, not head lice in a human. Observing between the fingers for red lines, as in choice D, is not a method to check for head lice.

Correct Answer: C

Rationale: In a severe asthma attack, the child is likely to develop respiratory acidosis due to impaired respirations leading to the retention of carbon dioxide, which combines with water to form carbonic acid. This results in the pH imbalance characterized by an excess of carbonic acid. Choices A, B, and D are incorrect. Metabolic alkalosis (Choice A) is not typically associated with severe asthma attacks; respiratory alkalosis (Choice B) would involve a decrease, not an increase, in carbon dioxide levels; and metabolic acidosis (Choice D) is not the primary acid-base imbalance seen in severe asthma attacks.

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.