HESI RN
HESI Maternity Test Bank
1. A 34-week primigravida woman with preeclampsia is receiving Lactated Ringer’s 500ml with magnesium sulfate 20 grams at the rate of 3g/hr. How many ml/hr should the nurse program the infusion pump?
- A. 75ml/hr
- B. 100ml/hr
- C. 50ml/hr
- D. 25ml/hr
Correct answer: A
Rationale: To calculate the infusion rate, divide the total quantity to be infused (500ml) by the total time (1 hour) which equals 500ml/hr. Since the magnesium sulfate is being given at 3g/hr, and 1g of magnesium sulfate is in 5ml of solution, the rate will be 3g/hr x 5ml/g = 15ml/hr. Therefore, the total infusion rate should be 500ml/hr + 15ml/hr = 515ml/hr. Hence, the nurse should program the infusion pump to deliver 75ml/hr (515ml/hr total - 500ml/hr Lactated Ringer's rate). This choice is correct because it accounts for both the Lactated Ringer's and magnesium sulfate rates. Choice B, 100ml/hr, is incorrect as it does not consider the additional magnesium sulfate infusion rate. Choice C, 50ml/hr, is incorrect because it does not account for the magnesium sulfate infusion. Choice D, 25ml/hr, is incorrect as it is too low and does not consider the magnesium sulfate being infused concurrently.
2. A mother who is breastfeeding her baby receives instructions from the nurse. Which instruction is most effective to prevent nipple soreness?
- A. Wear a cotton bra.
- B. Increase nursing time gradually.
- C. Correctly place the infant on the breast.
- D. Manually express a small amount of milk before nursing.
Correct answer: C
Rationale: The most effective instruction to prevent nipple soreness when breastfeeding is to correctly place the infant on the breast. Proper latch-on techniques ensure that the baby is properly positioned, reducing the risk of nipple soreness. When the baby is positioned correctly, they can nurse effectively without causing discomfort to the mother.
3. Which physical assessment data should the nurse consider a normal finding for a primigravida client who is 12 hours postpartum?
- A. Unilateral lower leg pain.
- B. Saturating two perineal pads per hour.
- C. Pulse rate of 56 bpm.
- D. Soft, spongy fundus.
Correct answer: C
Rationale: A pulse rate of 56 bpm is a normal finding for a primigravida client who is 12 hours postpartum. Bradycardia (pulse rate 50-70 bpm) can be a normal postpartum occurrence due to increased stroke volume and decreased cardiac output after delivery. Unilateral lower leg pain and saturating two perineal pads per hour are not normal findings and require further assessment. A soft, spongy fundus could indicate uterine atony, which is abnormal postpartum.
4. After each feeding, a 3-day-old newborn is spitting up large amounts of Enfamil® Newborn Formula, a nonfat cow's milk formula. The pediatric healthcare provider changes the neonate's formula to Similac® Soy Isomil® Formula, a soy protein isolate-based infant formula. What information should the LPN/LVN provide to the mother about the newly prescribed formula?
- A. The new formula is a coconut milk formula used with babies with impaired fat absorption.
- B. Enfamil® Formula is a demineralized whey formula that is needed with diarrhea.
- C. The new formula is a casein protein source that is low in phenylalanine.
- D. Similac® Soy Isomil® Formula is a soy-based formula that contains sucrose.
Correct answer: D
Rationale: The LPN/LVN should inform the mother that Similac® Soy Isomil® Formula is a soy-based formula containing sucrose. This formula is suitable for infants with cow's milk protein allergy or intolerance, which may be the reason for the newborn spitting up large amounts of the previous cow's milk formula.
5. A 36-week primigravida is admitted to labor and delivery with severe abdominal pain and bright red vaginal bleeding. Her abdomen is rigid and tender to touch. The fetal heart rate (FHR) is 90 beats/minute, and the maternal heart rate is 120 beats/minute. What action should the nurse implement first?
- A. Alert the neonatal team and prepare for neonatal resuscitation
- B. Notify the healthcare provider from the client’s bedside
- C. Obtain written consent for an emergency cesarean section
- D. Draw a blood sample for stat hemoglobin and hematocrit
Correct answer: B
Rationale: In this scenario, the priority action for the nurse is to notify the healthcare provider from the client's bedside. The clinical presentation of severe abdominal pain, bright red vaginal bleeding, rigid and tender abdomen, along with fetal bradycardia (FHR 90 bpm) and maternal tachycardia (120 bpm) indicates an urgent need for medical intervention. Notifying the healthcare provider promptly allows for immediate assessment and decision-making to address the critical condition and ensure timely and appropriate management for both the mother and fetus.
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