A nurse is caring for a laboring client at 38 weeks gestation. The fetal heart rate monitor shows late decelerations with moderate variability. The client's cervix is 6 cm dilated, and contractions are occurring every 2-3 minutes. What is the priority nursing intervention?

Late decelerations with moderate variability indicate uteroplacental insufficiency and fetal hypoxia. The priority is to improve fetal oxygenation by repositioning to left lateral and administering oxygen, which addresses the underlying cause. Other options may worsen the situation or are premature.

Core Nursing Explanation Key Concept Analysis: This question assesses the priority nursing intervention for a specific Fetal Heart Rate (FHR) pattern during labor. Late decelerations are a concerning pattern where the FHR decreases after the peak of a contraction and returns to baseline after the contraction ends. This pattern is caused by uteroplacental insufficiency, meaning the placenta cannot deliver enough oxygen to the fetus during the stress of a contraction. The presence of moderate variability is a reassuring sign, indicating the fetal central nervous system is not yet acidotic and is responding appropriately. The priority is to improve oxygen delivery to the fetus immediately.

Answer Rationale: Key Point! The priority intervention for late decelerations is to improve uteroplacental perfusion and fetal oxygenation. Positioning the client in the left lateral position relieves pressure from the gravid uterus on the maternal aorta and inferior vena cava, improving blood return to the heart and thus blood flow to the placenta. Administering oxygen via face mask increases the oxygen content in the maternal blood, which can then be transferred to the fetus. These are the first-line, non-invasive actions a nurse must take before proceeding to more invasive interventions.

Distractor Analysis:

• Option 1 (Encourage pushing): This is incorrect. The client is only 6 cm dilated, which is the active phase of the first stage of labor. Pushing is appropriate only during the second stage (full dilation at 10 cm). Encouraging pushing now is ineffective and could increase maternal exhaustion and fetal stress.
• Option 3 (Increase oxytocin): Watch out for confusion! This action would be dangerous. Oxytocin (Pitocin) increases the frequency and strength of contractions. Since late decelerations are caused by insufficient oxygen delivery during contractions, stronger or more frequent contractions would worsen the fetal hypoxia. The correct action for late decelerations is often to discontinue oxytocin if it is being infused.
• Option 4 (Prepare for cesarean): While a cesarean section may become necessary if intrauterine resuscitation measures (like left lateral positioning and oxygen) fail, it is not the first priority. The nurse must first attempt to correct the reversible cause (poor perfusion/oxygenation). Immediate preparation for surgery would be indicated for more severe patterns like prolonged bradycardia or absent variability with recurrent late or variable decelerations.

Related Concepts: This scenario tests the nurse's ability to perform intrauterine resuscitation. The sequence typically is: Position (left lateral), Oxygen, IV fluids (to increase maternal circulating volume), Discontinue oxytocin, and Notify the provider. The presence of moderate variability is a critical piece of data that buys time for these interventions.

Concept Summary

Concept	Description	Clinical Implication
Late Deceleration	FHR deceleration that starts at the peak of a contraction, has a smooth shape, and returns to baseline after the contraction ends.	Indicates uteroplacental insufficiency. The fetus is not getting enough oxygen during contractions.
FHR Variability	Irregular fluctuations in the baseline FHR. Moderate variability is the normal, reassuring pattern.	Indicates an intact fetal central nervous system and absence of significant acidosis. Its presence is a key factor in deciding management.
Intrauterine Resuscitation	First-line interventions to improve fetal oxygenation and placental blood flow.	Includes: Left lateral position, Oxygen administration, IV fluid bolus, Discontinuing uterine stimulants, Treating maternal hypotension.

Side-by-Side Comparison!

FHR Deceleration Type	Shape & Timing	Cause (Physiology)	Priority Nursing Action
Early Deceleration	Mirrors contraction. Onset early, nadir at peak of contraction.	Head compression (vagal response). Benign.	Monitor. No intervention needed.
Late Deceleration	Onset after contraction starts, nadir after peak, recovery after contraction ends.	Uteroplacental insufficiency (hypoxia).	Intrauterine resuscitation (Position, O2, fluids, stop Pitocin).
Variable Deceleration	Variable shape, abrupt onset and recovery, often V/U-shaped. Timing variable.	Umbilical cord compression.	Change maternal position (often Trendelenburg or knee-chest) to relieve cord pressure.

Anatomy, Physiology & Pharmacology Points

• Physiology: The left lateral position works by moving the uterus off the great vessels. Lying supine can cause supine hypotensive syndrome, drastically reducing cardiac output and placental perfusion.
• Pharmacology: Oxytocin (Pitocin) is a uterotonic agent. It is contraindicated or must be discontinued in the presence of non-reassuring FHR patterns like late decelerations, as it exacerbates the underlying problem.
• Labor Stages: First stage (0-10 cm dilation), Second stage (full dilation to delivery of baby), Third stage (delivery of placenta). Pushing occurs in the second stage.

Memory Tips

• LATE for LATER: Late decelerations start LATER in the contraction. Think: "The baby is LATE getting oxygen."
• VEAL CHOP Mnemonic for FHR patterns and causes:
  • Variable decelerations → Cord Compression
  • Early decelerations → Head Compression
  • Accelerations → OK (reassuring)
  • Late decelerations → Placental Insufficiency
• First, Fix the Flow! For any non-reassuring pattern, your first thought should be to improve oxygen and blood flow to the baby (position, O2, fluids).

High-Frequency NCLEX Topics Fetal monitoring and appropriate interventions are Core NCLEX content. You must be able to: 1. Identify FHR patterns (Early, Late, Variable, Accelerations). 2. Interpret the significance of variability and baseline rate. 3. Select the priority and appropriate nursing action based on the pattern. 4. Understand when to notify the provider versus when to act independently.

Watch Out for Question Variations!

• Change in Variability: What if the scenario said "late decelerations with absent variability"? The urgency increases significantly, and preparation for expedited delivery (like c-section) becomes a much higher priority.
• Change in Stage of Labor: What if the client was fully dilated? The correct action might then include encouraging pushing in a specific position (like lateral or hands-and-knees) while continuing oxygen, as delivery may resolve the issue.
• Adding a Medication: A question might ask, "The nurse should anticipate an order for which intravenous fluid?" (Answer: A lactated Ringer's bolus to increase maternal intravascular volume and perfusion).

Nursing Clinical Practice Guide Clinical Scenario: You are the labor nurse for Maria, a 28-year-old G1P0 at 38 weeks. She has an epidural and is on continuous electronic fetal monitoring. You note the FHR tracing begins to show decelerations that start about 20 seconds after each contraction begins, dipping to 110 bpm, and returning to baseline of 140 bpm well after the contraction is over. The tracing has a "wiggly" baseline (moderate variability). Maria's blood pressure is 118/74.

Nursing Intervention Strategy:

1. Immediate Assessment & Action (Within 1 minute):
   • Assess: Confirm the pattern is recurrent late decelerations. Check maternal vital signs, especially for hypotension.
   • Intervene: Reposition Maria onto her left side. If she cannot maintain that, use a right lateral or modified Sims position. Place a pillow or wedge behind her back.
   • Intervene: Apply a non-rebreather face mask at 10-15 L/min to provide high-flow oxygen.
   • Communicate: Calmly explain to Maria what you are doing: "Maria, I'm just going to help you roll to your left side and give you some extra oxygen to help give the baby a boost. The baby's heart rate is dipping a little after your contractions, and this helps get more blood and oxygen to the baby."
2. Secondary Actions & Monitoring (Next 2-5 minutes):
   • Assess: Check the IV site and infusion. Is she receiving oxytocin? If yes, Key Point! stop the oxytocin infusion per protocol or notify the provider immediately for the order.
   • Intervene: Increase the rate of the primary IV fluid (e.g., Lactated Ringer's) to provide a fluid bolus (e.g., 500-1000 mL rapidly if not contraindicated) to support maternal blood pressure and cardiac output.
   • Monitor: Continuously observe the FHR tracing. Is the pattern improving? Is variability maintained?
3. Provider Notification & Documentation:
   • Notify the obstetric provider or midwife of the findings and your interventions.
   • Document meticulously: Time of onset of decelerations, description of pattern, your actions (position change, O2 administration, fluid bolus, oxytocin discontinuation), maternal response, and fetal response (e.g., "Late decelerations persist but variability remains moderate").

Patient Safety and Precautions:

• Never increase oxytocin in the face of late or variable decelerations.
• Ensure oxygen is administered safely (no open flames nearby).
• Monitor for signs of fluid overload when giving IV boluses, especially in patients with cardiac or renal conditions.
• If intrauterine resuscitation measures fail and the FHR pattern deteriorates (e.g., developing bradycardia, loss of variability), be prepared for the team to move toward expedited delivery (operative vaginal delivery or cesarean section).

Nursing Procedure & Medication Flow Procedure: Administering Oxygen in Labor & Delivery

1. Explain the procedure to the client.
2. Select appropriate delivery device: Non-rebreather mask for high-concentration O2 (can deliver 80-95% FiO2).
3. Set oxygen flowmeter to 10-15 liters per minute.
4. Ensure the reservoir bag inflates before placing on the client's face.
5. Secure the elastic strap comfortably.
6. Monitor patient tolerance and fetal response via monitor.
7. Document: Start time, flow rate, device used, and clinical indication.

Medication: Oxytocin (Pitocin) - Critical Caution

• Action: Stimulates uterine contractions.
• Nursing Responsibility: You are responsible for titrating the infusion based on a protocol (contraction frequency, intensity, and FHR pattern).
• STOP Criteria: Discontinue or do not increase oxytocin for: Contractions > 5 in 10 min, contraction duration > 90 sec, resting tone > 25 mmHg, or any non-reassuring FHR pattern (late/variable decels, bradycardia, minimal/absent variability).

A Word from Your Senior Nurse "In the delivery room, the fetal monitor is our window into the baby's well-being. Seeing a late deceleration pattern can be stressful, but remember your ABCs—but for the baby! Alter position, Boost O2, Check fluids and contractions. Your calm, swift action to improve placental perfusion is often all that's needed to turn the situation around. Never underestimate the power of simply turning a mom to her side. It's a fundamental nursing intervention that directly impacts patient outcomes. On the NCLEX, they are testing your clinical judgment: can you identify the problem and choose the least invasive, most effective action first? That's the heart of safe nursing care."