HESI RN
Maternity HESI Quizlet
1. 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.
2. A 38-week primigravida who works at a desk job and sits at a computer for 8 hours each day tells the nurse that her feet have begun to swell. Which instruction would be most effective in preventing pooling of blood in the lower extremities?
- A. Wear support stockings.
- B. Reduce salt in her diet.
- C. Move about every hour.
- D. Avoid constrictive clothing.
Correct answer: C
Rationale: During pregnancy, especially in the third trimester, it is common for women to experience swelling due to decreased circulation. Encouraging the patient to move about every hour helps prevent blood pooling in the lower extremities by promoting circulation. This simple activity can help alleviate swelling and discomfort associated with prolonged sitting.
3. An infant with tetralogy of Fallot becomes acutely cyanotic and hyperneic. Which action should the nurse implement first?
- A. Place the infant in a knee-chest position.
- B. Administer morphine sulfate.
- C. Start intravenous fluids.
- D. Provide 100% oxygen by face mask.
Correct answer: A
Rationale: In a tetralogy of Fallot situation, placing the infant in a knee-chest position is the initial priority to help increase systemic vascular resistance, which reduces the right-to-left shunt and improves oxygenation. This position can assist in optimizing oxygen levels before considering other interventions. Administering morphine sulfate (choice B) is not the first-line treatment for tetralogy of Fallot crisis. Starting intravenous fluids (choice C) may be necessary but is not the priority in this situation. Providing 100% oxygen by face mask (choice D) may not fully address the underlying issue of decreased systemic vascular resistance that leads to cyanosis in tetralogy of Fallot.
4. 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.
5. Immediately after birth, a newborn infant is suctioned, dried, and placed under a radiant warmer. The infant has spontaneous respirations, and the nurse assesses an apical heart rate of 80 beats/minute and respirations of 20 breaths/minute. What action should the nurse take next?
- A. Initiate positive pressure ventilation.
- B. Intervene after the one-minute Apgar assessment.
- C. Initiate CPR on the infant.
- D. Assess the infant's blood glucose level.
Correct answer: A
Rationale: A heart rate below 100 bpm in a newborn indicates bradycardia and requires intervention. Positive pressure ventilation should be initiated to improve oxygenation and help increase the infant's heart rate. This intervention is crucial to support the newborn's transition to extrauterine life and prevent further complications.
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