HESI RN
HESI Maternity Test Bank
1. 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.
2. A couple has been trying to conceive for nine months without success. Which information obtained from the clients is most likely to have an impact on the couple's ability to conceive a child?
- A. Both partners have a daily exercise regimen that includes running four miles each morning.
- B. The couple has a history of having sexual intercourse 2 to 3 times per week.
- C. The woman's menstrual period occurs every 35 days.
- D. They use lubricants with each sexual encounter to decrease friction.
Correct answer: D
Rationale: Using lubricants during sexual encounters can potentially impact the couple's ability to conceive a child. Some lubricants may contain substances that are spermicidal or alter the vaginal environment, affecting sperm motility and fertility.
3. Upon admission to the prenatal clinic, a 23-year-old woman informs the nurse that her last menstrual period began on February 15, and that previously her periods were regular. Her pregnancy test is positive. What is this client's expected date of delivery (EDD)?
- A. November 22.
- B. November 8.
- C. December 22.
- D. October 22.
Correct answer: A
Rationale: To determine the expected date of delivery (EDD) using Nägele's rule, add 7 days to the first day of the last menstrual period (LMP) which is February 15, resulting in February 22. Then, subtract 3 months from February 22, which gives November 22 as the estimated due date.
4. A new mother is having trouble breastfeeding her newborn son. He is making frantic rooting motions and will not grasp the nipple. What intervention would be most helpful to this mother?
- A. Ask the mother to stop feeding, comfort the infant, and then assist the mother to help the baby latch on.
- B. Use a nipple shield to help the baby latch on.
- C. Try a different breastfeeding position.
- D. Have another person help the mother with breastfeeding.
Correct answer: A
Rationale: In this scenario, the best intervention is to ask the mother to stop feeding, comfort the infant, and then assist her in helping the baby latch on. Stopping the feeding and providing comfort can reduce the infant's frustration and create a calmer environment for successful breastfeeding. Choice B, using a nipple shield, may not address the underlying issue causing the baby's difficulty latching. Choice C, trying a different breastfeeding position, can be attempted after the baby is calm and ready to latch. Choice D, having another person help, may not be necessary if the mother can be guided effectively on latching techniques.
5. 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.
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