HESI RN
HESI Practice Test Pediatrics
1. A child receives a prescription for amantadine 42 mg PO BID. Amantadine is available as a 50 mg/5 mL syrup. Using a supplied calibrated measuring device, how many mL should be administered per dose? (Round to the nearest tenth.)
- A. 4.2 mL
- B. 5 mL
- C. 3.6 mL
- D. 4 mL
Correct answer: A
Rationale: To calculate the mL per dose, divide the prescribed dose (42 mg) by the concentration of the syrup (50 mg/5 mL) and then convert the result to mL. 42 mg / 50 mg = 0.84. To find the amount in mL, multiply 0.84 by 5 mL, which equals 4.2 mL. Therefore, 4.2 mL should be administered per dose.
2. A 2-year-old boy begins to cry when the mother starts to leave. What is the nurse's best response in this situation?
- A. Let me read this book to you.
- B. Two years old usually stop crying the minute the parent leaves.
- C. Now be a big boy. Mommy will be back soon.
- D. Let's wave bye-bye to mommy.
Correct answer: D
Rationale: Waving bye-bye to mommy helps the child understand that the separation is temporary.
3. A mother brings her 3-week-old infant to the clinic because the baby vomits after eating and always seems hungry. Further assessment indicates that the infant's vomiting is projectile, and the child seems listless. Which additional assessment finding indicates the possibility of a life-threatening complication?
- A. Irregular palpable pulse
- B. Hyperactive bowel sounds
- C. Underweight for age
- D. Crying without tears
Correct answer: D
Rationale: Crying without tears is a sign of severe dehydration, which is a potentially life-threatening complication in infants with projectile vomiting. Dehydration can rapidly progress in infants, leading to serious consequences if not promptly addressed. The combination of projectile vomiting, listlessness, and absence of tears when crying should raise concerns about severe dehydration and the need for urgent intervention to prevent further complications.
4. The nurse finds a 6-month-old infant unresponsive and calls for help. After opening the airway and finding the XXXX, the infant is still not breathing. What action should the nurse take next?
- A. Palpate the femoral pulse and check for regularity.
- B. Deliver cycles of 30 chest compressions and 2 breaths.
- C. Give two breaths that make the chest rise.
- D. Feel the carotid pulse and check for adequate breathing.
Correct answer: C
Rationale: In a scenario where a 6-month-old infant is unresponsive and not breathing after the airway is open, giving two breaths that make the chest rise is the appropriate action. This helps deliver oxygen to the infant's lungs and can help initiate breathing. Chest compressions are not recommended for infants as the first step in resuscitation. Checking pulses like the femoral or carotid pulse is not the priority when an infant is not breathing, as providing oxygen through breaths is essential.
5. During a well-baby check, the nurse hides a block under the baby's blanket, and the baby looks for the block. Which normal growth and development milestone is the baby developing?
- A. Separation anxiety.
- B. Associative play.
- C. Object prehension.
- D. Object permanence.
Correct answer: D
Rationale: When a baby looks for a hidden object, it demonstrates the development of object permanence. This milestone is significant as it signifies the baby's understanding that objects continue to exist even when they are not visible. It is a crucial aspect of cognitive development in infancy. Choice A, separation anxiety, refers to distress when separated from a primary caregiver and is not demonstrated in this scenario. Choice B, associative play, involves interactive play with others and is not relevant to object search. Choice C, object prehension, refers to the ability to grasp and hold objects, which is not specifically demonstrated by looking for a hidden object in this context.
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