A nurse is monitoring a laboring client when the fetal heart rate monitor shows late decelerations with minimal variability. The client is at 38 weeks gestation, cervix is 6 cm dilated, and contractions are occurring every 2-3 minutes. What is the nurse's priority action?
1Increase the oxytocin infusion rate to strengthen contractions
2Encourage the client to push with the next contraction
3Position the client in left lateral position and administer oxygen✓ 정답
4Prepare for immediate vaginal delivery
해설
Late decelerations with minimal variability indicate fetal hypoxia requiring immediate intervention. Positioning left lateral and administering oxygen improves uteroplacental blood flow and oxygenation. Other options are not priority actions in this acute scenario.
Core Nursing ExplanationKey Concept Analysis: This question tests the nurse's ability to recognize and respond to a non-reassuring fetal heart rate (FHR) pattern, specifically late decelerations with minimal variability. These are signs of uteroplacental insufficiency, where the placenta cannot deliver enough oxygen to the fetus, especially during uterine contractions. The priority is to improve fetal oxygenation immediately.
Answer Rationale: Key Point! The priority action is always to improve fetal oxygenation first. Positioning the client in the left lateral position relieves pressure from the gravid uterus on the maternal inferior vena cava and aorta, improving venous return, cardiac output, and thus uteroplacental blood flow. Administering oxygen via face mask (typically 8-10 L/min) increases the oxygen content in maternal blood available for placental exchange. These are immediate, independent nursing interventions that address the root cause of the late decelerations.
Distractor Analysis:
Watch out for confusion! Option ①: Increasing oxytocin would worsen the situation. Oxytocin (Pitocin) increases the strength and frequency of contractions, which would further compromise uteroplacental perfusion and exacerbate fetal hypoxia. The nurse should actually stop any oxytocin infusion if it is running.
Option ②: Encouraging pushing is contraindicated. The client is only 6 cm dilated, which is in the active phase of the first stage of labor. Pushing is appropriate only during the second stage (full dilation). Pushing now would increase intra-abdominal pressure and fetal stress without benefit.
Option ④: Preparing for immediate vaginal delivery is a premature action. While late decelerations with minimal variability are serious, the first step is always to attempt intrauterine resuscitation (positioning, oxygen, IV fluids, discontinuing oxytocin). If these measures do not correct the FHR pattern, then notifying the provider and preparing for an operative delivery (e.g., cesarean section) becomes the next priority.
Related Concepts: The management of non-reassuring FHR patterns follows the acronym "DR C BRAVADO" for interpretation and "I P O" for intervention: Identify pattern, Position left lateral, Oxygenate. Other interventions include increasing IV fluids (to support maternal circulation) and notifying the healthcare provider.
Concept Summary
Concept
Description
Clinical Implication
Late Deceleration
Gradual decrease in FHR beginning at the peak of a contraction, with the nadir occurring after the peak. Mirrors the contraction shape.
Indicates uteroplacental insufficiency. The fetus is not getting enough oxygen during contractions.
Minimal Variability
Amplitude range of FHR fluctuations is undetectable or ≤5 beats per minute (bpm).
Indicates possible fetal acidosis, sleep cycle, or effects of central nervous system depressants (e.g., narcotics). Combined with late decels, it's a more ominous sign.
Intrauterine Resuscitation
First-line actions to improve fetal oxygenation: Position (left lateral), Oxygen, IV fluids, Discontinue oxytocin.
The nurse's independent, immediate priority for non-reassuring FHR patterns.
Side-by-Side Comparison!
FHR Deceleration Type
Onset & Shape
Cause
Nursing Implication
Early Deceleration
Mirrors contraction. Nadir at peak of contraction.
Head compression (vagal response). Benign.
No action needed. Reassuring pattern.
Variable Deceleration
Abrupt, variable shape/shape/depth. "V" or "U" shaped.
Umbilical cord compression.
Change maternal position (left/right, knee-chest), may administer amnioinfusion.
Late Deceleration
Gradual. Nadir after peak of contraction.
Uteroplacental insufficiency.
Intrauterine resuscitation (Position left, O2, IV fluids, stop oxytocin).
Anatomy, Physiology & Pharmacology Points
Physiology: Uteroplacental blood flow is not autoregulated. It depends entirely on maternal perfusion pressure. Supine position causes supine hypotensive syndrome (aortocaval compression), drastically reducing cardiac output and placental perfusion.
Pharmacology: Oxytocin stimulates uterine contractions. In the presence of non-reassuring signs, it must be discontinued immediately as it is a contributing factor to fetal stress.
Labor Stages: First stage (latent 0-6 cm, active 6-10 cm dilation). Second stage (full dilation to delivery). Pushing is only in the second stage.
Memory Tips
Acronym for Intervention: "I P O" for Intrauterine resuscitation: Identify, Position (left), Oxygen.
Late Decels are LATE: The deceleration starts Late in the contraction and is caused by a Late (insufficient) oxygen supply from the placenta.
Left is Life: Left lateral position is the go-to for improving fetal oxygenation.
High-Frequency NCLEX Topics
This is a classic NCLEX-RN priority-setting and maternity question. You must know:
1. How to identify the three main types of decelerations (Early, Variable, Late).
2. That late decelerations require immediate nursing action.
3. The sequence of priority: Intrauterine resuscitation first, then notify the provider, then prepare for possible delivery if no improvement.
Watch Out for Question Variations!
Instead of asking for the "priority action," the question might ask for the "nurse's first action" or "most appropriate initial intervention" – the answer is the same.
The scenario could change the FHR pattern to variable decelerations. The priority action then shifts to changing the mother's position (to relieve cord compression) rather than automatically giving oxygen.
The question might add that the client is receiving oxytocin. The correct action then includes "discontinue the oxytocin infusion" as part of the priority.
Nursing Clinical Practice GuideClinical Scenario: You are the labor nurse for Maria, a 28-year-old G1P0 at 38 weeks. You note on the monitor a pattern of FHR dropping to 110 bpm starting at the peak of each contraction and not returning to baseline (150 bpm) until 30 seconds after the contraction ends. The variability appears very flat. Contractions are strong, every 2 minutes. Maria is lying on her back.
Nursing Intervention Strategy:
Immediate Assessment & Action: Say, "Maria, I need to help you roll onto your left side, please." Gently assist her into the left lateral position. Apply a non-rebreather oxygen mask at 10 L/min. Check her blood pressure (supine hypotension is likely).
Systematic Approach: Follow "I P O +":
Identify: Confirm the pattern is late decelerations with minimal variability.
Position: Left lateral.
Oxygen: 8-10 L/min via face mask.
+ IV Fluids: Increase the rate of the primary IV line (e.g., Lactated Ringer's) to a rapid bolus as ordered to expand intravascular volume.
+ Oxytocin: If an oxytocin infusion is running, STOP IT immediately.
Monitor & Communicate: Continuously monitor the FHR strip for improvement (return of variability, cessation of late decels). If no improvement within a few minutes, notify the physician or midwife immediately and report your interventions. Document everything meticulously: time, FHR pattern, actions taken, client response, and notification of provider.
Prepare for Escalation: While performing intrauterine resuscitation, mentally prepare for the next steps: the provider may order a cesarean section for fetal distress. Ensure the operating room is notified if needed.
Patient Safety and Precautions:
Never increase oxytocin in the face of non-reassuring FHR patterns.
Never coach to push before full cervical dilation (10 cm).
Oxygen administration is safe for short-term use but should be titrated off once the FHR pattern improves.
Always verify that positional changes are effective by watching the monitor.
Nursing Procedure & Medication FlowProcedure: Administering Oxygen in Labor
1. Explain the need to the client: "We're giving you some extra oxygen to help your baby."
2. Apply a non-rebreather mask for highest FiO2 (Fraction of inspired oxygen).
3. Set flow rate to 8-10 liters per minute. Ensure the reservoir bag inflates.
4. Monitor maternal oxygen saturation via pulse oximeter if available.
5. Reassess FHR pattern continuously. Discontinue oxygen when pattern improves per protocol/provider order.
Medication: Oxytocin (Pitocin) Management
- In this scenario, the priority is to DISCONTINUE the infusion.
- Use a stopwatch or pump to ensure it is off. Document the time and rate at which it was discontinued.
- Remember: Oxytocin has a short half-life (3-5 minutes), so stopping it allows uterine activity to decrease.
A Word from Your Senior Nurse
"In the delivery room, you are the baby's first advocate. That fetal heart rate monitor is your direct line to knowing how the baby is tolerating labor. When you see late decelerations, don't panic – but act swiftly and systematically. Your quick thinking to turn the mom and give oxygen can be the difference between a simple intervention and an emergency C-section. On the NCLEX, they are testing your clinical judgment: can you identify the problem and take the correct, independent nursing action first? Remember, you don't need an order to turn a patient or give oxygen in an emergent fetal situation. Own that responsibility."
Late Deceleration — A gradual decrease in the fetal heart rate beginning at the peak of a contraction, with the lowest point (nadir) occurring after the contraction's peak. It indicates uteroplacental insufficiency and fetal hypoxia.
Minimal Variability — A fetal heart rate pattern where the fluctuations in the baseline are ≤5 beats per minute. It suggests possible fetal central nervous system depression or acidosis, especially when combined with other non-reassuring signs.
Intrauterine Resuscitation — A set of immediate nursing/medical interventions to improve fetal oxygenation, including maternal left lateral positioning, oxygen administration, IV fluid bolus, and discontinuing oxytocin.
Uteroplacental Insufficiency — A condition where the placenta cannot deliver adequate oxygen and nutrients to the fetus, often manifesting as late decelerations on the fetal heart rate monitor.
Supine Hypotensive Syndrome — A drop in maternal blood pressure and cardiac output caused by compression of the inferior vena cava and aorta by the gravid uterus when the mother is in a supine position, reducing placental blood flow.