A 32-year-old pregnant woman at 34 weeks gestation presents … | 마이메르시 MyMerci
Maternal Newborn Health
문제
A 32-year-old pregnant woman at 34 weeks gestation presents to the labor and delivery unit reporting a sudden gush of clear fluid from her vagina 2 hours ago. Which assessment finding would be the MOST concerning and require immediate intervention?
1Fetal heart rate of 180 beats per minute with minimal variability✓ 정답
2Maternal temperature of 99.2°F (37.3°C)
3Nitrazine paper test showing a pH of 7.0
4Pooling of clear fluid in the posterior vaginal fornix
해설
Fetal tachycardia (180 bpm) with minimal variability indicates fetal distress from cord compression or infection, requiring immediate intervention. Other findings (mild fever, pH 7.0, fluid pooling) are expected in PROM but less urgent.
심화 해설
Core Nursing ExplanationKey Concept Analysis: This question assesses the nurse's ability to prioritize findings in a patient with Premature Rupture of Membranes (PROM) at 34 weeks gestation. The core theme is identifying signs of fetal compromise or maternal infection, which are the two major complications following PROM. The nurse must apply the principles of fetal monitoring and understand the implications of abnormal Fetal Heart Rate (FHR) patterns.
Answer Rationale: Key Point! A fetal heart rate of 180 beats per minute (tachycardia) combined with minimal variability is a highly concerning sign of fetal distress. This pattern suggests possible causes like chorioamnionitis (intra-amniotic infection), umbilical cord compression, or fetal hypoxia. It requires immediate intervention, such as maternal position change, oxygen administration, notifying the provider, and preparing for possible emergency delivery. This finding takes priority over confirmatory tests for PROM or mild maternal symptoms.
Distractor Analysis:
Watch out for confusion! Option ②, a maternal temperature of 99.2°F (37.3°C), is only slightly elevated. While fever is a sign of infection, a low-grade fever alone, without other signs of maternal tachycardia or fetal tachycardia, is less urgent and requires monitoring but not immediate intervention.
Option ③, a Nitrazine paper test showing a pH of 7.0, is an expected confirmatory finding for rupture of membranes. Amniotic fluid is alkaline (pH ~7.0-7.5), which turns the yellow Nitrazine paper blue. This finding confirms the patient's history but is not, by itself, an emergency.
Option ④, pooling of clear fluid in the posterior vaginal fornix (a Sterile Speculum Exam finding), is another standard, expected confirmation of ruptured membranes. It is part of the diagnostic assessment, not an indicator of acute compromise.
Related Concepts: The priority in obstetrics is always the fetal status when there is a threat. After PROM, the risk of ascending infection (chorioamnionitis) and umbilical cord prolapse or compression increases dramatically. Nursing care focuses on continuous fetal monitoring, assessing for signs of infection (maternal fever, fetal tachycardia, uterine tenderness, foul-smelling discharge), and preventing cord accidents (e.g., keeping the patient on bed rest, avoiding vaginal exams if cord prolapse is a risk).
임상 시나리오
Nursing Clinical Practice GuideClinical Scenario: You are the nurse in triage. Ms. Lopez, G2P1 at 34 weeks, states her "water broke" 2 hours ago with a large gush. She denies contractions but is anxious. You apply the external fetal monitor.
Nursing Intervention Strategy:
1. Immediate Assessment (ABCs for the fetus): Place on continuous electronic fetal monitoring (EFM). Assess FHR baseline, variability, and for decelerations. A finding of tachycardia with minimal variability triggers your immediate action protocol.
2. Actions for Non-Reassuring FHR:
* Reposition the mother (left lateral position to improve placental perfusion).
* Administer oxygen via non-rebreather mask at 10-12 L/min.
* Increase IV fluid rate (if an IV is present) to improve maternal circulation.
* Notify the obstetric provider and charge nurse STAT.
* Document the FHR pattern, your interventions, and the fetal response.
* Prepare for possible emergency cesarean section: ensure consent is signed, alert the OR team, and facilitate rapid transport.
3. Concurrent Maternal Assessment: While managing the fetal emergency, also assess maternal vital signs, check for uterine tenderness, and note the color and odor of any fluid. Avoid digital vaginal exams until the provider rules out cord prolapse.
Patient Safety and Precautions: The greatest immediate danger after PROM is umbilical cord prolapse, especially if the presenting part is not engaged. If the patient reports a sudden increase in vaginal pressure or you see a loop of cord, immediately place her in Trendelenburg or knee-chest position, use a sterile gloved hand to gently lift the presenting part off the cord, and call for emergency help. Never attempt to push the cord back in.
Nursing Procedure & Medication Flow
* Fetal Monitoring Interpretation: Know the categories of FHR tracings (Category I: normal, Category II: indeterminate, Category III: abnormal). Tachycardia (>160 bpm) with minimal variability is a Category II/III finding requiring evaluation and possible intervention.
* Medication Alert: If delivery is imminent and the fetus is preterm, the provider may order corticosteroids (e.g., betamethasone) to accelerate fetal lung maturity and magnesium sulfate for fetal neuroprotection. Administer these promptly as ordered, monitoring for maternal side effects like flushing and hypotension with MgSO4.
A Word from Your Senior Nurse
"In labor and delivery, your eyes are constantly on that fetal monitor strip. It's the baby's EKG. A sudden shift from a nice, reactive pattern to tachycardia with a flat line (minimal variability) is a five-alarm fire. Your quick recognition and actions—turn, oxygen, fluids, call—can be the difference between a good outcome and a bad one. Never dismiss fetal tachycardia, especially with other non-reassuring features. In your NCLEX and in practice, the fetus's well-being is almost always the top priority when data suggests distress."
핵심 개념
Premature Rupture of Membranes — Rupture of the amniotic sac (breaking of the water) before the onset of labor, occurring at or beyond 37 weeks gestation. Before 37 weeks, it is termed Preterm PROM (PPROM).
Fetal Tachycardia — A fetal heart rate baseline greater than 160 beats per minute sustained for 10 minutes or more. It can be a sign of fetal infection, hypoxia, maternal fever, or drug effects.
Minimal Variability — Fluctuations in the fetal heart rate baseline that are less than 5 beats per minute in amplitude. It indicates a loss of normal autonomic nervous system control and is a non-reassuring sign, often associated with fetal sleep, sedation, or hypoxia.
Chorioamnionitis — An infection of the amniotic fluid, fetal membranes, placenta, and/or decidua. It is a serious complication of PROM characterized by maternal fever, fetal tachycardia, uterine tenderness, and purulent amniotic fluid.
Nitrazine Test — A diagnostic test using pH-sensitive paper to detect amniotic fluid. Amniotic fluid is alkaline (pH 7.0-7.5) and turns the yellow paper blue. False positives can occur with blood, semen, or certain infections.
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