A nurse is monitoring a laboring client at 38 weeks gestation. The fetal heart rate (FHR) tracing shows a baseline of 110 bpm with minimal variability and late decelerations occurring with each contraction. The client's contractions are every 2-3 minutes, lasting 60-90 seconds. What is the nurse's priority action?
1Change the client's position to left lateral and administer oxygen via face mask at 8-10 L/min
2Discontinue oxytocin if infusing and notify the healthcare provider immediately
3Prepare for immediate cesarean delivery and notify the surgical team✓ 정답
4Increase IV fluid rate and perform vaginal examination to assess cervical dilation
해설
Late decelerations with minimal variability indicate severe fetal compromise requiring immediate delivery. Other interventions like position change or oxygen are insufficient in this scenario.
Core Nursing ExplanationKey Concept Analysis: This question assesses the critical skill of interpreting Electronic Fetal Monitoring (EFM) and determining the appropriate, urgent nursing response. The scenario describes a Category III fetal heart rate (FHR) tracing, which is abnormal and indicates fetal acidemia. The key features are a baseline of 110 bpm (low normal/bradycardia), Key Point!minimal variability (absent of accelerations, indicating poor fetal neurologic function), and recurrent late decelerations (suggesting uteroplacental insufficiency). Together, these signs point to significant fetal oxygen deprivation that is not responding to intrauterine resuscitation.
Answer Rationale: The priority action is to Key Point!prepare for immediate cesarean delivery. According to the American College of Obstetricians and Gynecologists (ACOG), a Category III FHR tracing (which includes absent variability with recurrent late or variable decelerations, or bradycardia) requires prompt evaluation and preparation for expedited delivery. The presence of minimal variability with recurrent late decelerations signifies a high risk of fetal metabolic acidemia. The nurse's role is to recognize this emergency, initiate preparations for delivery (notifying the surgical team), and inform the healthcare provider. This action directly addresses the root cause—the fetus needs to be removed from the hypoxic intrauterine environment.
Distractor Analysis:
Watch out for confusion! Option ① (position change and oxygen) represents intrauterine resuscitation measures. These are appropriate initial steps for less ominous patterns (e.g., Category II with moderate variability) but are insufficient and a dangerous delay when variability is minimal and decelerations are recurrent and late.
Option ② (discontinue oxytocin and notify) is correct if oxytocin is infusing, but the question does not state it is. More importantly, stopping a stimulant is not the definitive treatment for this severe pattern; the fetus needs delivery. Notification is part of the action, but preparation for delivery is the priority.
Option ④ (increase IV fluids and check dilation) is incorrect. While hydration can be supportive, a vaginal exam does not change the ominous FHR pattern. This intervention does not address the immediate threat to fetal well-being.
Related Concepts: Understanding FHR pattern categories (I, II, III) is essential. The priority always shifts from intrauterine resuscitation (for Category II) to preparation for delivery (for Category III). The nurse must also differentiate late decelerations (uniform shape, onset at peak of contraction, due to uteroplacental insufficiency) from variable decelerations (variable shape/timing, due to cord compression).
Concept Summary
Concept
Description
Nursing Implication
Category III FHR Tracing
Abnormal. Includes absent baseline variability with recurrent late/variable decelerations or bradycardia.
Indicates fetal acidemia is present or imminent. Prepare for expedited delivery (often cesarean).
Late Decelerations
Gradual decrease in FHR with contraction, nadir after peak of contraction. Uniform shape.
Sign of uteroplacental insufficiency (UPI). Assess for causes like hypotension, hyperstimulation.
Minimal/Absent Variability
Amplitude range ≤5 bpm. Reflects fetal sleep, CNS depressants, or acidemia.
When combined with decelerations, it is a red flag for fetal compromise.
Intrauterine Resuscitation
First-line interventions for non-reassuring patterns: Position change, O2, IV fluids, discontinue oxytocin.
Used for Category II tracings. If no improvement or pattern is Category III, move to delivery preparation.
Side-by-Side Comparison!
FHR Pattern Category
Characteristics
Nursing Priority
Category I (Normal)
Baseline 110-160 bpm, moderate variability, no late/variable decelerations, may have early decels.
Continue routine monitoring and support. No action needed.
Category II (Indeterminate)
Any tracing not Cat I or III. Includes minimal variability without decels, or decels with moderate variability.
Absent variability with recurrent late/variable decels or bradycardia. Sinusoidal pattern.
Key Point! Prepare for expedited delivery. Immediate provider notification and team mobilization.
Anatomy, Physiology & Pharmacology Points
Pathophysiology: Late decelerations are caused by uteroplacental insufficiency (UPI). During a contraction, blood flow to the intervillous space is reduced. If the placenta is already compromised, this leads to fetal hypoxia → chemoreceptor stimulation → fetal bradycardia. The deceleration is "late" because it takes time for the chemoreflex loop.
Fetal Variability: Reflects an intact connection between the fetal central nervous system (CNS) and heart. Minimal/absent variability suggests CNS depression, which can be due to hypoxia/acidosis, fetal sleep, or medications.
Oxytocin (Pitocin): A uterotonic medication used to induce/augment labor. A key side effect is uterine tachysystole (too frequent contractions), which can cause UPI and late decelerations. Discontinuing it is a primary intrauterine resuscitation step.
Memory Tips
Acronym for Intrauterine Resuscitation: "POD" – Position (left lateral), Oxygen (8-10 L/min via mask), Discontinue oxytocin/stop stimulation.
Category III = "3 Strikes": Think of the 3 ominous signs: 1) Absent/Minimal Variability, 2) Recurrent Late Decels, 3) Need for immediate delivery (the 3rd action).
Late Decelerations: "Late for the party" – they start and end after the contraction (the "party"). They look uniform and "U"-shaped.
High-Frequency NCLEX Topics
Fetal monitoring is a high-yield topic on the NCLEX-RN. You must be able to:
Identify FHR patterns (early, variable, late decelerations) from a strip description or image.
Differentiate between Category I, II, and III tracings.
Select the priority nursing action based on the pattern (e.g., continue monitoring vs. intrauterine resuscitation vs. prepare for delivery).
Know the steps of intrauterine resuscitation in the correct order.
Watch Out for Question Variations!
Shift from Symptom to Intervention: The question may show a FHR strip and ask, "Which finding requires immediate intervention?" (Answer: Category III pattern). Or it may ask, "The nurse has initiated intrauterine resuscitation. After 10 minutes, the FHR shows minimal variability and recurrent late decelerations. What is the next action?" (Answer: Prepare for cesarean delivery).
Including/Excluding Oxytocin: If the scenario states "oxytocin infusion is in progress," then the correct answer often includes "discontinue the oxytocin" as part of the initial action before moving to delivery prep if the pattern doesn't improve.
Variable vs. Late Decelerations: A question might describe variable decelerations with moderate variability. The priority would then be position change (to relieve cord compression), not immediate delivery.
Nursing Clinical Practice GuideClinical Scenario: You are the labor nurse for Maria, a 32-year-old G1P0 at 39 weeks. She is receiving IV oxytocin for labor augmentation. You note on the monitor: FHR baseline 105 bpm, variability minimal, and with each contraction (now every 2 minutes), the FHR gradually drops to 90 bpm, recovering only after the contraction ends. Maria's blood pressure is 118/74.
Nursing Intervention Strategy:
Immediate Assessment & Action:
Recognize the Emergency: This is a Category III pattern (minimal variability + recurrent late decelerations).
Call for Help: Use the call light or shout for another nurse. State clearly, "I need help in Room 4, Category III strip, preparing for possible stat C-section."
Initiate PODsimultaneously while preparing for delivery:
P: Turn Maria to her left lateral position immediately.
O: Apply a non-rebreather face mask at 10 L/min.
D: Discontinue the oxytocin infusion (turn the pump off).
Notify the Provider: Call the obstetrician or midwife STAT. Report concisely: "Patient Maria Jones, room 4. Category III FHR strip: baseline 105, minimal variability, recurrent late decelerations. Oxytocin off, on O2 and left side. No improvement. Preparing for cesarean."
Preparation for Delivery:
Instruct the unit secretary to call the surgical team (anesthesiologist, OR nurses, pediatrician/neonatal team).
Start a time-out/pre-op checklist: Verify patient identity, allergies, consent for surgery.
Insert a Foley catheter if not already present.
Ensure IV access is patent with a large-bore catheter (e.g., 18-gauge).
Have the neonatal resuscitation equipment (warmer, suction, bag-valve-mask) ready in the OR or delivery room.
Patient Support:
Explain the situation to Maria and her partner calmly and clearly: "The baby is showing signs of stress and we need to deliver quickly for safety. We are preparing for a cesarean section."
Provide emotional support; this is a frightening situation.
Patient Safety and Precautions:
Never leave the patient alone during a Category III event.
Do not delay calling the provider and preparing for surgery to continue attempting intrauterine resuscitation. The pattern itself mandates preparation.
Document meticulously: Time the pattern was noted, all actions taken (POD), provider notifications, patient response, and preparations made.
Nursing Procedure & Medication FlowProcedure: Responding to a Category III FHR Tracing
1. Assess: Confirm FHR pattern (baseline, variability, decelerations).
2. Activate: Call for assistance.
3. Resuscitate: Implement POD (Position, Oxygen, Discontinue stimulant).
4. Notify: Inform healthcare provider STAT with SBAR report.
5. Prepare: Mobilize team for expedited delivery (cesarean or operative vaginal).
6. Support & Document: Care for the patient/family and record all events.
Medication: Oxytocin (Pitocin)
Action: Stimulates uterine contractions.
Nursing Responsibility: Start at a low dose (e.g., 1-2 mU/min) and titrate per protocol based on contraction pattern and FHR.
Critical Monitoring: Continuously monitor FHR and uterine activity. Watch for tachysystole (>5 contractions in 10 minutes).
Intervention for Hyperstimulation: STOP THE INFUSION. Position patient, give O2. Do not restart until pattern normalizes and provider gives order.
A Word from Your Senior Nurse
"Labor and delivery nursing is about vigilant monitoring and swift, decisive action. That fetal heart rate strip is your direct line to the baby's well-being. When you see minimal variability with late decelerations, your brain should immediately scream 'Category III' and your body should start moving. Remember, your quick recognition and initiation of the chain of response—from calling for help to prepping the OR—can be the difference between a good outcome and a tragic one. On the NCLEX, they are testing this critical thinking under pressure. In real life, you're living it. Trust your training, know the categories cold, and never hesitate to escalate care when the strip tells you the baby is in trouble."
Category III Fetal Heart Rate Tracing — An abnormal FHR pattern indicating fetal acidemia is present or imminent. Includes absent baseline variability with recurrent late or variable decelerations, or bradycardia. Requires preparation for expedited delivery.
Late Decelerations — Gradual, uniform decreases in FHR that begin after the start of a contraction, with the nadir (lowest point) occurring after the peak of the contraction. They are caused by uteroplacental insufficiency.
Minimal Variability — An amplitude range of the fetal heart rate baseline that is undetectable or ≤5 beats per minute. It can indicate fetal sleep, CNS depression from medications, or fetal hypoxia/acidosis.
Intrauterine Resuscitation — A set of first-line nursing interventions for a non-reassuring (Category II) FHR pattern. Includes maternal position change (usually left lateral), administration of oxygen, IV fluid bolus, and discontinuing any labor stimulants like oxytocin.
Uteroplacental Insufficiency — A condition where the placenta cannot deliver sufficient oxygen and nutrients to the fetus. It is the primary pathophysiological cause of late decelerations in the fetal heart rate.