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. The LPN/LVN caring for a laboring client encourages her to void at least q2h, and records each time the client empties her bladder. What is the primary reason for implementing this nursing intervention?
- A. Emptying the bladder during delivery is difficult because of the position of the presenting fetal part.
- B. An over-distended bladder could be traumatized during labor as well as prolong the progress of labor.
- C. Urine specimens for glucose and protein must be obtained at certain intervals throughout labor.
- D. Frequent voiding minimizes the need for catheterization, which increases the chance of bladder infection.
Correct answer: B
Rationale: The primary reason for encouraging the laboring client to void regularly is to prevent an over-distended bladder, which could impede the descent of the fetus, prolong labor, and be at risk for trauma during delivery. Choice A is incorrect because the difficulty in emptying the bladder during delivery is not the main reason for this nursing intervention. Choice C is incorrect as it pertains to obtaining urine specimens for glucose and protein, not the primary reason for encouraging voiding. Choice D is incorrect because although frequent voiding can indeed minimize the need for catheterization, the primary reason is to prevent an over-distended bladder and potential complications.
3. Using Nägele's rule, what is the estimated date of delivery for a pregnant client who reports that the first day of her last menstrual period was August 2, 2006?
- A. April 25, 2007.
- B. May 9, 2007.
- C. May 29, 2007.
- D. June 2, 2007.
Correct answer: B
Rationale: Nägele's rule is used to estimate the date of delivery. It involves adding 7 days to the first day of the last menstrual period (August 2), which gives August 9. Then, subtracting 3 months from August 9, we arrive at May 9 of the following year as the estimated date of delivery. This makes choice B, 'May 9, 2007,' the correct answer. Choices A, C, and D are incorrect as they do not follow the correct calculation based on Nägele's rule.
4. What action should the nurse take if an infant, who was born yesterday weighing 7.5 lbs (3,402 grams), weighs 7 lbs (3,175 grams) today?
- A. Inform and assure the mother that this is normal weight loss.
- B. Encourage the mother to increase the frequency of breastfeeding.
- C. After verifying the accuracy of weight, notify the healthcare provider.
- D. Monitor the stool and urine output of the neonate for the last 24 hours.
Correct answer: A
Rationale: The correct action for the nurse to take in this situation is to inform and assure the mother that this weight loss is normal. Newborns can lose up to 10% of their birth weight in the first few days after birth, which is attributed to fluid loss and adjustment to life outside the womb. This weight loss is typically regained within the first two weeks of life. It is crucial for the nurse to educate and provide reassurance to the mother about this common occurrence in newborns.
5. The healthcare provider is reviewing the serum laboratory findings for a 5-day-old infant with congenital adrenal hyperplasia. Which laboratory result should be reported to the healthcare provider immediately?
- A. Bilirubin of 1.5 mg/dl.
- B. Glucose of 80 mg/dl.
- C. Potassium of 4.5 mEq/L.
- D. Sodium of 119 mEq/L.
Correct answer: D
Rationale: Low sodium levels in congenital adrenal hyperplasia can indicate salt-wasting crisis, which is a life-threatening emergency requiring immediate medical attention. Monitoring sodium levels is crucial to prevent complications such as dehydration and shock in these patients.
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