A multigravida client at 38 weeks gestation receives an epidural anesthesia for pain management. Two hours after the epidural placement, the nurse notes the client's blood pressure has dropped from 130/80 mmHg to 90/50 mmHg, and the fetal heart rate shows late decelerations. What is the nurse's priority intervention?
1Position the client in left lateral position and administer IV fluid bolus✓ 정답
2Administer oxygen at 10 L/min via face mask
3Prepare for immediate cesarean delivery
4Discontinue the epidural infusion immediately
해설
Maternal hypotension post-epidural requires left lateral positioning and IV fluid bolus to relieve aortocaval compression and restore blood pressure, addressing fetal late decelerations. Other options like oxygen, cesarean, or discontinuing epidural are not the immediate priority.
Core Nursing ExplanationKey Concept Analysis: This question tests the priority nursing intervention for Maternal Hypotension following epidural anesthesia, a common complication. The epidural blocks sympathetic nerves, causing vasodilation and a drop in blood pressure. This hypotension reduces uterine blood flow, leading to Uteroplacental insufficiency and the observed Late decelerations in the fetal heart rate (FHR). The priority is to rapidly correct the maternal hypotension to restore perfusion to the placenta and fetus.
Answer Rationale: Key Point! The correct answer is Position the client in left lateral position and administer IV fluid bolus. This is the first-line, immediate intervention. The left lateral position displaces the uterus off the maternal Inferior vena cava and aorta, relieving Aortocaval compression (Supine Hypotensive Syndrome) and improving venous return and cardiac output. Simultaneously, an IV fluid bolus (often 500-1000 mL of Lactated Ringer's) rapidly expands intravascular volume to counteract vasodilation. This dual action directly addresses the root cause of the fetal distress.
Distractor Analysis:
Watch out for confusion! Option ② (Administer oxygen) is a supportive measure but is not the first priority. Oxygen increases maternal oxygen saturation, but if placental perfusion is poor due to hypotension, the oxygen cannot be effectively delivered to the fetus. It should be done concurrently or immediately after initiating position change and fluids.
Watch out for confusion! Option ③ (Prepare for cesarean) is a drastic intervention reserved for when conservative measures fail to resolve fetal distress. The nurse must first implement corrective actions (position, fluids, possibly ephedrine) before escalating to surgical delivery.
Watch out for confusion! Option ④ (Discontinue epidural) is incorrect. While the infusion rate might be adjusted, abruptly disconnecting the epidural does not rapidly reverse the vasodilation already caused by the anesthetic. The hypotension must be treated directly. Furthermore, removing pain management abruptly is not patient-centered.
Related Concepts: This scenario integrates concepts of obstetric anesthesia, fetal monitoring, and emergency response. Late decelerations are a Pattern of uteroplacental insufficiency, often reversible if the cause (maternal hypotension) is promptly corrected. Understanding the chain of pathophysiology (epidural → vasodilation → hypotension → decreased placental perfusion → fetal hypoxia → late decels) is crucial for prioritizing care.
Concept Summary
Concept
Description
Clinical Implication
Epidural Anesthesia Side Effect
Sympathetic blockade leads to peripheral vasodilation and hypotension.
Routine BP monitoring post-epidural; have IV fluids ready.
Emergency: Position left, O2, IV fluids, notify provider.
Variable Deceleration
Variable onset, unrelated to contraction.
Abrupt, sharp, "V-shaped".
Umbilical cord compression.
Change maternal position (often Trendelenburg or knee-chest), O2, amnioinfusion may be ordered.
Anatomy, Physiology & Pharmacology Points
Anatomy/Physiology: The Inferior vena cava is a large vein returning blood from the lower body to the heart. When compressed by the uterus, preload drops, causing hypotension. The left lateral position uses gravity to shift the uterus to the left.
Pharmacology: Local anesthetics in the epidural space (e.g., bupivacaine) block nerve signals, including sympathetic fibers that maintain vascular tone. If fluids and positioning are insufficient, a vasopressor like Ephedrine (first-line in obstetrics as it maintains uterine blood flow) may be administered IV per provider order.
Memory Tips
Acronym for Late Decel Management:L.O.V.E. – Lateral position, Oxygen, Volume (IV fluids), Evaluate/Ephedrine/Notify provider.
Think "Pressure and Perfusion": The problem is low maternal BP (pressure) leading to poor placental perfusion. The fix is to increase pressure (position to improve venous return, fluids to increase volume).
High-Frequency NCLEX Topics
This is a classic NCLEX-RN scenario testing Priority-setting and emergency response in obstetric nursing. You must recognize the link between a common intervention (epidural), its complication (hypotension), and the resulting fetal distress (late decels). The NCLEX loves to ask "what is the first or priority action?" The answer is almost always a direct, non-invasive nursing intervention before calling the doctor or preparing for surgery.
Watch Out for Question Variations!
Change in FHR Pattern: What if the decelerations were variable? The priority intervention would shift to changing the mother's position (e.g., Trendelenburg, knee-chest) to relieve cord compression.
Change in Timing: What if the hypotension occurred before the epidural? The question might test Preload optimization – the nurse should administer a preload IV fluid bolusbefore the epidural is placed to prevent this complication.
Focus on Medication: "The provider orders ephedrine 5 mg IV for hypotension post-epidural. What is the nurse's priority assessment before administration?" Answer: Check the maternal blood pressure and heart rate (ephedrine increases both).
Nursing Clinical Practice GuideClinical Scenario: You are the labor nurse for Maria, G3P2 at 39 weeks. She received an epidural an hour ago for labor pain. Her initial BP was 128/78. Your routine 15-minute check reveals her BP is now 92/58, she feels lightheaded, and the electronic fetal monitor (EFM) shows repetitive late decelerations down to 100 bpm with poor variability.
Nursing Intervention Strategy:
Immediate Action (Within seconds): Call for help but DO NOT leave the patient. Manually turn Maria onto her left side. If a wedge is available, place it under her right hip. This is your single most important action.
Simultaneous Actions: While repositioning, instruct your colleague or shout for someone to:
Increase the main IV line rate to "wide open" or administer a 500-1000 mL Lactated Ringer's bolus as per protocol.
Apply a non-rebreather oxygen mask at 10-15 L/min.
Assessment & Communication:
Re-check BP in 1-2 minutes.
Continuously assess FHR pattern for improvement (decelerations should become less profound and frequent, variability should improve).
Notify the anesthesia provider and obstetrician immediately with a clear SBAR report: "Situation: Post-epidural hypotension with late decels. Background: 39-week G3P2. Assessment: BP 92/58, patient symptomatic, repetitive late decels. Recommendation: You at bedside? Prepared to give ephedrine if ordered."
If No Improvement: If BP remains low and late decels persist after position, O2, and a fluid bolus, anticipate an order for Ephedrine (5-10 mg IV push). Have it ready. Prepare for possible urgent operative delivery if fetal status does not recover.
Patient Safety and Precautions:
Never place a hypotensive pregnant patient supine. Always maintain lateral tilt.
Routine prophylactic IV fluid bolus (preload) before epidural placement is standard to help prevent this.
Monitor for fluid overload, especially in patients with cardiac history, but in this acute scenario, the risk of fetal hypoxia outweighs the risk of transient fluid overload in a healthy patient.
Nursing Procedure & Medication FlowProcedure: Managing Post-Epidural Hypotension
1. Assess: BP, FHR pattern, maternal symptoms (nausea, dizziness).
2. Intervene: Left lateral position. IV fluid bolus (LR or NS) via large-bore (18G or larger) IV.
3. Support: Administer O2 via non-rebreather mask.
4. Pharmacologic: Administer vasopressor (Ephedrine) per order if steps 1-3 fail. Monitor BP and HR closely after administration.
5. Evaluate: Reassess BP q2-5min until stable. Continuously monitor FHR for resolution of late decelerations and return of moderate variability.
Medication: Ephedrine
Class: Adrenergic agonist (mixed alpha and beta).
Action in Obstetrics: Constricts blood vessels (raising BP) without significantly reducing uterine blood flow (unlike pure alpha-agonists like phenylephrine).
Dose: Typical: 5-10 mg IV push. Can be repeated.
Monitoring: BP and maternal heart rate (can cause tachycardia). FHR response.
A Word from Your Senior Nurse
"Remember, in labor and delivery, you are caring for two patients. A change in one directly affects the other. This scenario is a perfect example. Your rapid, correct response to maternal hypotension isn't just about fixing a number on the monitor; it's about delivering oxygen to a baby who is telling you they're in trouble. Mastering this link between pathophysiology and intervention is what makes an excellent obstetric nurse. On the NCLEX, they're testing if you understand that chain of events and know which link to fix first. In real life, your calm, efficient execution of these steps can prevent a neonatal resuscitation. You've got this!"
Epidural Anesthesia — Regional anesthesia involving injection of local anesthetic into the epidural space of the spine to block pain signals; a common side effect is maternal hypotension due to sympathetic blockade.
Late Decelerations — A pattern on the fetal heart rate monitor where the deceleration begins after the peak of the uterine contraction and reflects uteroplacental insufficiency, often due to maternal hypotension or other causes of reduced blood flow.
Aortocaval Compression (Supine Hypotensive Syndrome) — Compression of the maternal inferior vena cava and aorta by the gravid uterus when in a supine position, leading to reduced venous return, cardiac output, and blood pressure.
Uteroplacental Insufficiency — A condition where blood flow through the uterus and placenta is inadequate to meet fetal metabolic demands, often manifesting as late decelerations on the fetal monitor.
Ephedrine — A vasopressor medication of choice for treating maternal hypotension in obstetrics, as it raises blood pressure without significantly reducing uterine blood flow.