A nurse is monitoring a 32-year-old primigravida at 41 weeks gestation when the fetal heart rate (FHR) tracing shows repetitive late decelerations with minimal variability. The cervix is 4 cm dilated, and contractions are occurring every 5 minutes. What is the nurse's priority assessment?

Late decelerations with minimal variability indicate fetal hypoxia and acidosis. The priority is fetal scalp pH assessment or stimulation to determine severity and guide intervention. Other assessments are important but less immediate for fetal status.

Core Nursing Explanation Key Concept Analysis: This question tests the critical nursing response to a non-reassuring fetal heart rate (FHR) pattern during labor. The key findings are repetitive late decelerations and minimal variability. Late decelerations are caused by uteroplacental insufficiency, where decreased blood flow during a contraction leads to fetal hypoxia. Minimal variability indicates the fetal central nervous system (CNS) is depressed, often due to hypoxia or acidosis. Together, these patterns signal significant fetal compromise requiring immediate evaluation of fetal acid-base status.

Answer Rationale: Key Point! The priority is to determine if the fetus is in immediate danger of acidosis, which would necessitate urgent delivery (often via cesarean section). Fetal scalp blood sampling (pH assessment) or fetal scalp stimulation are direct, specific assessments of fetal well-being in this context. A positive response to stimulation (FHR acceleration) or a normal pH (>7.25) suggests the fetus is compensating. An abnormal pH (

Nursing Clinical Practice Guide Clinical Scenario: You are the labor nurse for Maria, a 32-year-old at 41 weeks. The monitor shows the FHR dropping to 110 bpm with each contraction, not returning to baseline until well after the contraction is over. The tracing looks "flat" with very little beat-to-beat variation. Maria is on IV fluids and has an oxygen mask on. The resident is notified.

Nursing Intervention Strategy: 1. Assessment: Confirm monitor tracing and patient position. You have already repositioned her left side, given O2, and checked her IV line. The Key Point! next step is direct fetal assessment. You inform the provider: "We have recurrent late decels with minimal variability despite intrauterine resuscitation. I am preparing for fetal scalp stimulation."
2. Planning & Implementation: With a provider, you perform fetal scalp stimulation during a vaginal exam. If no acceleration occurs, you assist with fetal scalp blood sampling. You simultaneously prepare the patient for possible cesarean delivery: ensure consent is signed, alert the OR team, and provide clear, calm explanations to the patient and partner.
3. Evaluation: If stimulation causes an acceleration, you continue close monitoring. If the pH result is 7.18, you immediately prepare for delivery. Your ongoing evaluation focuses on the FHR response to interventions and the patient's physiological and emotional status.

Patient Safety and Precautions: • Never discontinue monitoring during these events.
• Ensure oxygen is delivered effectively via a tight-sealing non-rebreather mask at 10-12 L/min.
• Fetal scalp sampling is contraindicated in clients with certain infections (e.g., HIV, active herpes).
Nursing Procedure & Medication Flow Procedure: Intrauterine Resuscitation 1. Call for help/notify provider.
2. Position: Turn client to left lateral (or right lateral) position.
3. Oxygen: Apply non-rebreather mask at 10-12 L/min.
4. IV Fluids: Increase rate or give a bolus of lactated Ringer's (e.g., 500-1000 mL) if not contraindicated.
5. Stop: Discontinue oxytocin (Pitocin) if it is infusing.
6. Assess: Perform vaginal exam to rule out prolapse, assess dilation. Then proceed to fetal assessment (stimulation/pH).

Medication Alert: If tachysystole is present, terbutaline 0.25 mg subcutaneous may be ordered to relax the uterus.
A Word from Your Senior Nurse In labor and delivery, you are the eyes and ears for both your patient and her baby. That FHR monitor is your stethoscope for the fetus. When you see late decels with minimal variability, your brain should scream "uteroplacental insufficiency" and "possible acidosis." Your first moves are the basics of intrauterine resuscitation, but your critical thinking must immediately go to the next step: "Is this baby okay right now, or do we need to get it out?" That's what fetal scalp stimulation and pH sampling answer. Never be afraid to speak up and escalate care. Your vigilant assessment and prompt action are what stand between a non-reassuring strip and a poor neonatal outcome. On the NCLEX and in practice, always link the pattern to the pathophysiology, and the pathophysiology to your priority action.