HESI RN
HESI Pediatrics Practice Exam
1. When should a mother introduce solid foods to her 4-month-old baby girl? The mother states, 'My mother says I should put rice cereal in the baby's bottle now.' The nurse should instruct the mother to introduce solid foods when her child exhibits which behavior?
- A. Stops rooting when hungry
- B. Opens mouth when food comes her way
- C. Awakens once for nighttime feedings
- D. Gives up a bottle for a cup
Correct answer: B
Rationale: The correct answer is B: 'Opens mouth when food comes her way.' This behavior indicates readiness to start trying solid foods. Infants should be introduced to solid foods based on developmental cues, such as showing an interest in food and the ability to accept it. Choices A, C, and D are not indicative of readiness for solid foods. Stopping rooting when hungry is a reflex that may persist beyond the readiness for solids. Awakening for nighttime feedings is a normal behavior for a 4-month-old, and transitioning from a bottle to a cup is a later developmental milestone.
2. A mother brings her 8-month-old baby boy to the clinic because he has been vomiting and having diarrhea for the last 3 days. Which assessment is most important for the nurse to make?
- A. Assess the infant's abdomen for tenderness
- B. Determine if the infant has been exposed to a virus
- C. Measure the infant’s pulse
- D. Evaluate the infant’s cry
Correct answer: C
Rationale: The most crucial assessment in this scenario is to measure the infant's pulse. Pulse measurement is essential to evaluate the severity of dehydration, which can be a significant concern in a baby experiencing vomiting and diarrhea for several days. Assessing the abdomen for tenderness may provide information on potential causes of symptoms but is not as urgent as monitoring hydration status. Determining exposure to a virus is important for infection control but does not directly address the immediate issue of dehydration. Evaluating the infant's cry, although a form of communication, does not provide critical information regarding the baby's physiological status in this situation.
3. A child who weighs 25 kg is receiving IV ampicillin at a dose of 300 mg/kg/24 hours in equally divided doses every 4 hours. How many milligrams should the nurse administer to the child for each dose?
- A. 1875 mg
- B. 625 mg
- C. 2000 mg
- D. 1500 mg
Correct answer: A
Rationale: To calculate the correct dose for each administration, you first need to find the total daily dose: 300 mg/kg * 25 kg = 7500 mg/day. Since this total dose is divided into equally divided doses every 4 hours, there are 6 doses in 24 hours. Therefore, 7500 mg ÷ 6 doses = 1250 mg per dose. The nurse should administer 1250 mg every 4 hours, resulting in a total of 1875 mg for each dose in a 24-hour period. Choice A, 1875 mg, is the correct answer. Choice B, 625 mg, is incorrect as it does not consider the total daily dose and the frequency of administration. Choice C, 2000 mg, is incorrect as it is not the calculated dosage based on the given parameters. Choice D, 1500 mg, is also incorrect as it does not reflect the correct dosage calculation for each dose.
4. The mother of a 9-month-old girl provides the practical nurse with information about her daughter's diet. Which statement by the mother may indicate why the infant has been diagnosed with iron-deficiency anemia?
- A. She almost never drinks sugary water.
- B. She has been on whole milk for 7 months.
- C. She likes to chew on bread as a snack.
- D. She doesn't like to eat peaches or pears.
Correct answer: B
Rationale: The correct answer is B. Infants should not be given cow's milk before 1 year of age as it can interfere with iron absorption and lead to anemia. Choice A is incorrect as avoiding sugary water is actually a good practice. Choice C is unrelated to iron-deficiency anemia. Choice D, not liking peaches or pears, is also not directly related to iron-deficiency anemia.
5. The mother of a one-month-old calls the clinic to report that the back of her infant's head is flat. How should the nurse respond?
- A. Turn the infant on the left side braced against the crib when sleeping.
- B. Prop the infant in a sitting position with a cushion when not sleeping.
- C. Place a small pillow under the infant's head while lying on the back.
- D. Position the infant on the stomach occasionally when awake and active.
Correct answer: D
Rationale: Positioning the infant on the stomach occasionally when awake and active can help prevent flat spots on the head. This position allows for more natural movement and prevents prolonged pressure on one area of the head, reducing the risk of developing a flat spot. Turning the infant on the left side braced against the crib when sleeping (choice A) is not recommended as it does not address the issue of flat spots. Propping the infant in a sitting position with a cushion when not sleeping (choice B) may increase the risk of falls and is not suitable for a one-month-old. Placing a small pillow under the infant's head while lying on the back (choice C) should be avoided due to the risk of suffocation and sudden infant death syndrome (SIDS).
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