Pediatric HESI Test Bank

Correct Answer: C

Rationale: The correct answer is C: 37% to 47%. The normal hematocrit range for a 12-month-old infant is between 37% to 47%, which reflects the expected blood volume and red blood cell levels for this age. Choice A (19% to 32%) and Choice B (29% to 41%) are too low and do not encompass the typical hematocrit range for a healthy 1-year-old. Choice D (42% to 69%) is too high and falls outside the usual hematocrit values for this age group.

Correct Answer: C

Rationale: Phenylketonuria (PKU) is suggested by a mousy or musty odor of the urine, caused by the inability to metabolize phenylalanine. Maple syrup urine disease (Choice A) is characterized by a sweet-smelling urine. Tyrosinemia (Choice B) presents with cabbage-like odor in the urine. Trimethylaminuria (Choice D) results in a fishy odor in the urine, breath, and sweat.

Correct Answer: D

Rationale: The correct priority nursing action in this situation is to administer the prescribed dose of rapid-acting insulin. Rapid-acting insulin is necessary to help lower the elevated blood glucose level quickly, thereby preventing potential complications of hyperglycemia. Encouraging exercise, obtaining a glucometer reading, or suggesting consumption of complex carbohydrates like cheese may not address the immediate need to bring down the high blood glucose level effectively. Exercise could potentially raise blood glucose levels, obtaining a glucometer reading may delay necessary treatment, and consuming complex carbohydrates can further elevate blood glucose levels in this scenario.

Correct Answer: D

Rationale: Preparing a toddler for a CT scan involves providing a simple explanation of the procedure to help reduce anxiety and fear. Shaving the child's head is unnecessary for a CT scan and may increase distress. Starting an IV infusion or administering sedatives may not be appropriate or necessary for all pediatric patients undergoing CT scans, especially if the child can cooperate without these interventions.

Correct Answer: B

Rationale: Upright positioning is the most appropriate intervention to promote maximum chest expansion in a child with Duchenne muscular dystrophy. By keeping the child in an upright position, lung expansion is maximized, which improves breathing efficiency. Deep-breathing exercises may help with overall lung function but do not directly promote chest expansion. Coughing and chest percussion are more related to airway clearance and do not specifically address maximizing chest expansion.