HESI RN
HESI Maternity Test Bank
1. Upon arrival in the nursery, a newborn infant is breathing satisfactorily but appears dusky. What action should the LPN/LVN take first?
- A. Notify the healthcare provider immediately.
- B. Suction the infant's nares, then the oral cavity.
- C. Check the infant's oxygen saturation rate.
- D. Position the infant on the right side.
Correct answer: C
Rationale: The priority action in this scenario is to check the infant's oxygen saturation rate. This will provide crucial information on the infant's oxygen levels and the need for immediate oxygen therapy. Assessing oxygen saturation is essential in determining the severity of hypoxia and guiding further interventions to ensure adequate oxygenation. Option A is not the priority as immediate intervention related to oxygenation is needed before notifying the healthcare provider. Suctioning (Option B) may be necessary but should come after assessing oxygen saturation. Positioning the infant (Option D) does not address the immediate need to evaluate oxygen levels.
2. The healthcare provider prescribes Amoxicillin 500mg PO every 8hrs for a child who weighs 22 pounds. The available suspension is labeled Amoxicillin Suspension 250mg/5ml. The recommended maximum dose is 50mg/kg/24hr. How many mL should the nurse administer in a single dose based on the child’s weight?
- A. 10mL
- B. 15mL
- C. 7.5mL
- D. 5mL
Correct answer: A
Rationale: To calculate the dose for the child weighing 22 pounds, first convert the weight to kg: 22 lbs ÷ 2.2 = 10 kg. The maximum dose based on weight would be 10 kg × 50 mg/kg/24hr = 500 mg/24hr. Since the medication is prescribed every 8 hours, the dose for each administration would be 500 mg ÷ 3 doses = 166.67 mg. As the available suspension is 250mg/5ml, the nurse should administer 166.67 mg ÷ 250 mg/mL = 0.67 mL per dose. However, since it's not practical to administer a fraction of a milliliter, the nurse should round up to the nearest appropriate dose, which is 10mL.
3. A 3-month-old with myelomeningocele and atonic bladder is catheterized every 4hrs to prevent urinary retention. The home health nurse notes that the child has developed episodes of sneezing, urticarial, watery eyes, and a rash in the diaper area. What action is most important for the nurse to take?
- A. Auscultate the lungs for respiratory pneumonia.
- B. Change to latex-free gloves when handling infant.
- C. Draw blood to analyze for streptococcal infection.
- D. Apply zinc oxide to perineum with each diaper change.
Correct answer: B
Rationale: Latex allergy is a concern in patients with myelomeningocele, so switching to latex-free gloves is important.
4. A multiparous client is involuntarily pushing while being wheeled into the labor triage area. The nurse observes the fetal head presenting at the perineum. Which action should the nurse take?
- A. Support the infant as it emerges.
- B. Review prenatal laboratory results.
- C. Obtain fetal heart tones.
- D. Apply suprapubic pressure.
Correct answer: A
Rationale: When the fetal head is visible at the perineum, the priority is to support the infant's birth to prevent injury. Providing support as the infant emerges helps ensure a safe delivery process and reduces the risk of complications associated with rapid or uncontrolled birth.
5. The nurse is caring for a 2-day old neonate who has not passed meconium and has a swollen abdomen. The healthcare provider reviews the flat plate X-ray of the abdomen and makes a tentative diagnosis of Hirschsprung's disease. Which pathophysiological process is consistent with this neonate's clinical picture?
- A. The congenital absence of parasympathetic ganglion cells to large intestine produces no peristalsis.
- B. Pyloric obstruction causes reflux and projectile hematemesis.
- C. Partial imperforated anal opening limits passage of stools.
- D. Peristalsis moving against the intestinal obstruction causing hyperactivity of the bowel.
Correct answer: A
Rationale: Hirschsprung's disease is caused by the absence of parasympathetic ganglion cells in the large intestine, leading to a lack of peristalsis and obstruction.
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