A multigravida client at 40 weeks gestation is admitted to the labor and delivery unit. During the initial assessment, the nurse notes that the client is experiencing strong, regular contractions every 2-3 minutes lasting 60-90 seconds. The cervix is 8 cm dilated and 100% effaced. The fetal heart rate shows a baseline of 150 bpm with minimal variability. What is the most important nursing assessment priority at this time?

• Confirm FHR pattern: Verify minimal variability persists by evaluating a continuous tracing over at least 10 minutes. Rule out artifact, maternal heart rate, or fetal sleep cycle.
• Initiate intrauterine resuscitation measures:
  • Reposition the client to a left lateral or hands-and-knees position to relieve aortocaval compression and maximize uteroplacental perfusion.
  • Administer a 500-1000 mL IV fluid bolus of isotonic crystalloid (e.g., Lactated Ringer's) unless contraindicated, to correct maternal hypotension or dehydration.
  • Discontinue oxytocin if infusing, to reduce uterine hyperstimulation and allow fetal recovery between contractions.
  • Apply oxygen via non-rebreather mask at 10 L/min to increase maternal oxygen reserve; note that evidence for routine oxygen use is mixed and it should be used judiciously.
• Notify the provider: Communicate findings using SBAR format, including FHR baseline, variability, presence of accelerations or decelerations, contraction pattern, and maternal vital signs.
• Prepare for possible expedited delivery: If variability remains minimal despite interventions or late decelerations develop, anticipate the need for assisted vaginal delivery or cesarean section.

• Document FHR every 15 minutes during active labor per AWHONN guidelines, including baseline, variability, accelerations, and decelerations.
• Continuously monitor maternal blood pressure, heart rate, and uterine activity to detect tachysystole (more than 5 contractions in 10 minutes) or maternal hypotension.
• Assess for signs of placental abruption (e.g., vaginal bleeding, abdominal pain, uterine hypertonus) if the tracing suddenly deteriorates.

• Brief the neonatal resuscitation team on the potential for a depressed newborn, ensuring equipment and personnel are ready.
• Provide clear, calm updates to the client and support person, explaining the rationale for interventions without causing undue alarm.

Minimal variability in the context of frequent, strong contractions reflects fetal cerebral hypoxia. Uterine contractions compress the spiral arteries, reducing oxygen delivery to the intervillous space. A compromised fetus cannot maintain the autonomic nervous system modulation that produces normal variability, signaling a shift to anaerobic metabolism and acidosis. Prompt recognition and intervention are critical to prevent neonatal encephalopathy.