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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. An infant delivered vaginally by an HIV-positive mother is admitted to the newborn nursery. What intervention should the healthcare provider perform first?
- A. Bathe the infant with an antimicrobial soap.
- B. Measure the head and chest circumference.
- C. Obtain the infant's footprints.
- D. Administer vitamin K (AquaMEPHYTON).
Correct answer: A
Rationale: The initial intervention should be to bathe the infant with an antimicrobial soap to reduce the risk of HIV transmission from maternal fluids. This immediate action helps minimize potential exposure to the virus and promotes infection control practices in the care of infants born to HIV-positive mothers. Choice B, measuring head and chest circumference, is important for assessing growth and development but not the priority in this scenario. Choice C, obtaining footprints, is a routine procedure but not a priority over infection control measures. Choice D, administering vitamin K, is important for clotting factors but does not address the immediate risk of HIV transmission.
3. A loading dose of terbutaline (Brethine) 250 mcg IV is prescribed for a client in preterm labor. Brethine 20 mg is added to 1,000 mL of D5W. How many milliliters of the solution should the nurse administer?
- A. 45
- B. 15 mL
- C. 4
- D. 13
Correct answer: D
Rationale: To calculate the amount of terbutaline to administer, first convert the dose to the same unit. 250 mcg = 0.25 mg. Next, set up a proportion: 20 mg is to 1000 mL as 0.25 mg is to X mL. Cross multiply and solve for X: 20 × X = 0.25 × 1000. X = (0.25 × 1000) / 20 = 12.5 mL. Therefore, the nurse should administer 13 mL of the solution. Choice A is incorrect as it does not reflect the correct calculation. Choice B is incorrect as it does not consider the accurate conversion and calculation. Choice C is incorrect as it is not the result of the correct proportion calculation.
4. The client at 10 weeks' gestation is palpated with the fundus at 3 fingerbreadths above the pubic symphysis. The client reports nausea, vomiting, and scant dark brown vaginal discharge. What action should the nurse take?
- A. Collect a urine sample for urinalysis.
- B. Measure vital signs.
- C. Recommend bed rest.
- D. Obtain human chorionic gonadotropin levels.
Correct answer: D
Rationale: In a pregnant client with a fundal height greater than expected at 10 weeks and experiencing scant dark brown vaginal discharge, there is a concern for a molar pregnancy. Assessing human chorionic gonadotropin (hCG) levels is crucial in this situation to confirm or rule out this condition.
5. When teaching a gravid client how to perform kick (fetal movement) counts, which instruction should the nurse include?
- A. If 10 kicks are not felt within one hour, drink orange juice and count for another hour.
- B. Count the movements once daily, for one hour, before breakfast.
- C. Avoid caffeinated drinks for 24 hours before conducting the kick test.
- D. Exercise for 15 minutes before starting the counting to help increase fetal movement.
Correct answer: A
Rationale: When teaching a gravid client about kick (fetal movement) counts, the nurse should instruct them that if 10 kicks are not felt within one hour, they should drink orange juice and continue counting for another hour. This instruction is crucial as a drop in fetal movements could indicate potential issues with fetal well-being, and taking action such as rechecking after food intake is recommended to monitor the situation closely.
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