Pediatric HESI Test Bank

Correct Answer: C

Rationale: The correct hematocrit range for a healthy 12-month-old infant is between 37% to 47%. At this age, this range reflects the normal blood volume and red blood cell (RBC) levels in infants. Choice A (19% to 32%) is too low for a healthy hematocrit level in a 12-month-old. Choice B (29% to 41%) is also below the typical range for a 12-month-old. Choice D (42% to 69%) includes an upper limit that is higher than expected for a healthy infant, making it an incorrect option.

Correct Answer: A

Rationale: Tachypnea is an early sign of congestive heart failure that nurses should recognize. Tachypnea refers to rapid breathing, which can be an indication of the body's attempt to compensate for decreased cardiac output in congestive heart failure. Bradycardia (choice B) is a slow heart rate and is not typically associated with congestive heart failure. Inability to sweat (choice C) and increased urinary output (choice D) are not specific early signs of congestive heart failure and are not typically recognized as such.

Correct Answer: A

Rationale: The correct answer is to rotate injection sites. Rotating injection sites is crucial in insulin administration to prevent lipodystrophy, which is the breakdown of subcutaneous fat at the injection site. It also helps ensure consistent insulin absorption. Administering insulin before meals (choice B) is important to match insulin peak action with the rise in blood glucose after eating. Storing insulin in the refrigerator (choice C) is correct to maintain its potency and stability. Administering insulin at bedtime (choice D) may not be suitable for all patients and is not a universal recommendation for insulin administration.

Correct Answer: B

Rationale: Choice B indicates a need for further teaching because participation in contact sports like football should be avoided in children with idiopathic thrombocytopenia due to the increased risk of bleeding. Choices A, C, and D are correct. Avoiding aspirin and medications like ibuprofen helps prevent bleeding complications. Swimming is a safe physical activity that can be recommended. Antihistamines do not pose a significant risk in this case and can be used if needed.

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.