A primigravida at 41 weeks gestation is admitted for labor i… | 마이메르시 MyMerci
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Maternal Newborn Health
문제

A primigravida at 41 weeks gestation is admitted for labor induction due to post-term pregnancy. The cervix is 1 cm dilated, 50% effaced, and the fetal head is at -2 station. Which nursing intervention should be the priority when preparing for cervical ripening with misoprostol (Cytotec)?

해설
With an unfavorable cervix (Bishop score less than 6), cervical ripening with prostaglandins like misoprostol is indicated before oxytocin induction to improve cervical readiness for labor.
같은 주제 다음 문제A 32-year-old multigravida at 42 weeks gestation is admitted for labor induction due to po…

심화 해설

Correct Answer: 4. Obtain informed consent and ensure continuous fetal monitoring is established

Rationale:

This question addresses the critical nursing priorities before initiating cervical ripening with misoprostol (Cytotec). The scenario presents a post-term pregnancy at 41 weeks gestation with an unfavorable cervix (1 cm dilated, 50% effaced, -2 station), which is a common indication for pharmacological cervical ripening.

The priority nursing intervention is to obtain informed consent and establish continuous fetal monitoring. This is grounded in two fundamental principles of safe nursing practice. First, misoprostol is a prostaglandin E1 analog that promotes cervical ripening and stimulates uterine contractions. A known and serious risk of this medication is tachysystole (excessive uterine contractions), which can lead to non-reassuring fetal heart rate patterns and fetal compromise. The research by Eminov and Eminov (2025) specifically investigates the safety of misoprostol administration, highlighting that the evaluation of adverse events, including uterine hyperstimulation, is a core component of comparing induction agents [1]. Therefore, a baseline assessment of fetal well-being and continuous monitoring to detect abnormalities immediately after administration are non-negotiable safety requirements. Second, as an invasive pharmacological intervention with known risks, the patient has the ethical and legal right to be fully informed about the procedure, its purpose, potential side effects, and alternative options before it is performed. The nurse's role is to verify that this consent has been obtained and documented.

The other options are incorrect because they bypass these critical safety steps. Administering the medication immediately without consent or establishing monitoring is a violation of patient rights and a safety risk. Inserting an intrauterine pressure catheter (IUPC) is an invasive procedure typically reserved for situations where external monitoring is inadequate, not a standard prerequisite for cervical ripening. Preparing for an immediate cesarean delivery is an extreme and inappropriate response to an unfavorable cervix; the entire purpose of cervical ripening is to improve the Bishop score to facilitate a vaginal delivery, a principle supported by the study from Zheng et al. (2026), which examines misoprostol’s role in improving the cervical Bishop score to achieve a successful vaginal birth .
References (research sources)
  • [1]
    Comparison of the effectiveness and safety of vaginal and sublingual low-dose misoprostol versus vaginal dinoprostone for labor ınduction: A retrospective cohort study.Research articleEminov E, Eminov A. (2025) · DOI: 10.1371/journal.pone.0336025

임상 시나리오

Clinical Practice Guide: Misoprostol for Cervical Ripening

Before initiating cervical ripening with misoprostol for a post-term patient, the nurse's priority is to verify informed consent and establish continuous electronic fetal monitoring. This ensures a baseline fetal heart rate tracing is documented and allows for immediate detection of tachysystole or non-reassuring patterns after administration.

Key Safety Protocol:
  • Confirm the order, indication, and that informed consent is signed.
  • Perform a 20-minute baseline fetal heart rate tracing before administration. The tracing must be reassuring (moderate variability, absence of late decelerations).
  • Administer the medication per protocol (commonly 25 mcg vaginally every 4-6 hours).
  • Maintain continuous monitoring for at least 30 minutes to 2 hours post-dose, observing for contraction frequency and fetal response.
  • If tachysystole occurs (more than 5 contractions in 10 minutes) with a non-reassuring fetal heart rate, initiate intrauterine resuscitation (lateral positioning, oxygen, IV fluid bolus) and notify the provider immediately.

An unfavorable cervix (low Bishop score) is an expected finding prompting the use of a ripening agent and is not an indication for immediate cesarean delivery. Invasive monitoring with an intrauterine pressure catheter is reserved for specific clinical situations, such as inadequate external tracing or the need to quantify contraction strength, and is not a standard prerequisite for ripening.

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