HESI RN
HESI Maternity 55 Questions Quizlet
1. The healthcare provider prescribes oxytocin 2 milliunits/minute to induce labor for a client at 41-weeks gestation. The nurse initiates an infusion of Ringer’s Lactate solution 1000 mL with oxytocin 10 units. How many mL/hour should the nurse program the infusion pump?
- A. 12 mL/hour
- B. 2 mL/hour
- C. 22 mL/hour
- D. 42 mL/hour
Correct answer: A
Rationale: To calculate the infusion rate in mL/hour, first, convert 2 milliunits/minute to milliunits/hour by multiplying by 60 to get 120 milliunits/hour. Then, calculate the mL/hour using the formula: milliunits/hour (120) × total volume (1000 mL) ÷ units in IV solution (10 units) = 1200 mL/hour. Therefore, the nurse should program the infusion pump to deliver 12 mL/hour to provide the prescribed dose of oxytocin. Choice B is incorrect as it does not reflect the correct calculation. Choice C is incorrect as it is not derived from the correct formula. Choice D is incorrect as it is not the result of the accurate calculation based on the provided information.
2. A client who is receiving oxytocin to augment early labor begins to experience tachysystolic tetanic contractions with variable fetal heart decelerations. Which action should the nurse implement?
- A. Turn off the oxytocin infusion.
- B. Reposition the fetal monitor transducers.
- C. Decrease the rate of the oxytocin infusion.
- D. Alert the charge nurse about the patient's condition.
Correct answer: A
Rationale: When a client experiences tachysystolic tetanic contractions with variable fetal heart decelerations, indicating uterine hyperstimulation, the priority action is to turn off the oxytocin infusion. This step aims to reduce uterine activity, which can compromise fetal oxygenation and lead to adverse outcomes.
3. A client receiving oxytocin (Pitocin) to augment early labor. Which assessment is most important for the nurse to obtain each time the infusion rate is increased?
- A. Pain level
- B. Blood pressure
- C. Infusion site
- D. Contraction pattern
Correct answer: D
Rationale: When a client is receiving oxytocin to augment labor, the most crucial assessment for the nurse to obtain each time the infusion rate is increased is monitoring the contraction pattern. Increasing the infusion rate of oxytocin can lead to stronger and more frequent contractions, which can have implications for both the mother and the baby. Monitoring the contraction pattern helps ensure the safe administration of oxytocin and allows for timely interventions if needed.
4. In developing a teaching plan for expectant parents, the nurse plans to include information about when the parents can expect the infant's fontanels to close. The LPN/LVN bases the explanation on knowledge that for the normal newborn, the
- A. anterior fontanel closes at 2 to 4 months and the posterior by the end of the first week.
- B. anterior fontanel closes at 5 to 7 months and the posterior by the end of the second week.
- C. anterior fontanel closes at 8 to 11 months and the posterior by the end of the first month.
- D. anterior fontanel closes at 12 to 18 months and the posterior by the end of the second month.
Correct answer: D
Rationale: The anterior fontanel typically closes between 12 to 18 months, while the posterior fontanel usually closes by the end of the second month. It is important for parents to know these timeframes as it helps in monitoring the normal growth and development of their newborn. Delayed closure of fontanels may indicate potential health issues, and early closure may also warrant further evaluation by healthcare providers.
5. At 20 weeks gestation, a client is scheduled for an ultrasound. In preparing the client for the procedure, the nurse should explain that the primary reason for conducting this diagnostic study is to obtain which information?
- A. Sex and size of the fetus.
- B. Chromosomal abnormalities.
- C. Fetal growth and gestational age.
- D. Lecithin-sphingomyelin ratio.
Correct answer: C
Rationale: The primary reason for an ultrasound at 20 weeks gestation is to assess fetal growth, gestational age, and anatomical development. This evaluation helps ensure the fetus is developing appropriately and can detect any potential issues that may require intervention. Choices A, B, and D are incorrect because at 20 weeks, the primary focus of the ultrasound is not to determine the sex of the fetus, detect chromosomal abnormalities, or assess the lecithin-sphingomyelin ratio. While these factors may be evaluated in pregnancy, they are not the primary reasons for an ultrasound at 20 weeks gestation.
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