A 28-year-old gravida 3, para 2 client at 38 weeks gestation… | 마이메르시 MyMerci
Maternal Newborn Health
문제

A 28-year-old gravida 3, para 2 client at 38 weeks gestation is admitted to the labor and delivery unit with strong, frequent contractions. She has a history of two previous cesarean deliveries. During active labor, the client suddenly screams in severe pain, and the fetal heart rate drops to 80 bpm with late decelerations. The client's vital signs show: BP 90/50 mmHg, HR 120 bpm, and she appears pale and diaphoretic. What is the nurse's immediate priority action?

해설
In suspected uterine rupture, the immediate priority is to stop oxytocin infusion and prepare for emergency cesarean delivery to prevent maternal hemorrhage and fetal hypoxia. Other options like oxygen administration or repositioning are supportive but secondary to urgent surgical intervention.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question tests the nurse's ability to recognize and prioritize interventions for a life-threatening obstetric emergency: Uterine rupture. The classic presentation includes a patient with a history of previous cesarean sections (a scarred uterus) who experiences a sudden, sharp, tearing pain during labor, accompanied by signs of maternal shock (hypotension, tachycardia, pallor, diaphoresis) and fetal distress (bradycardia, late decelerations). The pathophysiological mechanism is a full-thickness tear in the uterine wall, leading to massive hemorrhage, fetal expulsion into the abdomen, and immediate threat to both lives.

Answer Rationale: Key Point! In suspected uterine rupture, time is critical. The immediate priority is twofold: stop any uterine stimulant (oxytocin) to prevent worsening contractions and further tearing, and prepare for emergency cesarean delivery. This is the definitive treatment to control hemorrhage and deliver the fetus. Option ③ directly addresses both of these critical, time-sensitive actions.

Distractor Analysis:
  • Option ① (Administer oxygen): While providing high-flow oxygen is a supportive measure for fetal and maternal hypoxia, it does not address the root cause (the ruptured uterus and hemorrhage). It is important but not the immediate priority when surgical intervention is required.
  • Option ② (Increase IV fluids and notify): Rapid fluid resuscitation is crucial for hypovolemic shock, and notifying the provider is essential. However, simply "notifying" is passive. The nurse must act immediately to stop the oxytocin and initiate preparation for surgery while calling for help. This option lacks the urgent, specific action needed.
  • Option ④ (Reposition and monitor): Repositioning to the left lateral position can improve placental perfusion and is a standard intervention for fetal heart rate decelerations. However, in the context of the classic signs of uterine rupture and maternal shock, continued monitoring is dangerously inappropriate. This is a catastrophic event requiring immediate intervention, not observation.
Related Concepts: This scenario integrates knowledge of obstetric risk factors (previous uterine surgery), fetal monitoring interpretation (late decelerations indicate uteroplacental insufficiency), shock management (hemorrhagic shock), and the nursing principle of prioritizing interventions that address the most immediate threat to life (maternal exsanguination and fetal anoxia).
Concept Summary
ConceptKey Points
Uterine RuptureComplete tear of uterine wall. Presents with sudden severe pain, maternal shock, fetal distress. Requires immediate surgery.
VBAC (Vaginal Birth After Cesarean)Carries risk of uterine rupture. Requires careful monitoring in a facility equipped for emergency cesarean.
Late DecelerationsFHR pattern where nadir occurs after peak of contraction. Indicates uteroplacental insufficiency.
Nursing Priority (ABCs)In hemorrhage, circulation (C) is the priority. Stop the cause of bleeding (oxytocin) and prepare for definitive control (surgery).

Side-by-Side Comparison!
ConditionKey FeaturesImmediate Nursing Priority
Uterine RupturePrevious scar, sudden tearing pain, shock, fetal bradycardia.Stop oxytocin, prepare for emergency cesarean delivery.
Placental AbruptionPainful, dark vaginal bleeding, rigid/tender uterus, fetal distress.Assess for DIC (Disseminated Intravascular Coagulation), prepare for emergency delivery.
Umbilical Cord ProlapseProlapsed cord seen/palpated after ROM (Rupture Of Membranes), variable or prolonged decelerations.Relieve cord compression (knee-chest position, manual elevation of presenting part), prepare for emergency delivery.

Anatomy, Physiology & Pharmacology Points
  • Uterine Scar: A previous cesarean incision is the most common site for rupture. The lower uterine segment is thinner and less vascular, making it more prone to tearing under the stress of labor contractions.
  • Oxytocin (Pitocin): A uterotonic agent that stimulates strong, coordinated contractions. In the presence of a uterine scar, it increases intrauterine pressure and the risk of rupture. Stopping it is the first pharmacological intervention.
  • Fetal Physiology: A sudden drop in FHR (Fetal Heart Rate) to 80 bpm (normal: 110-160 bpm) with late decelerations indicates severe hypoxia due to disrupted placental blood flow from the rupture and hemorrhage.

Memory Tips
  • Acronym for Uterine Rupture Signs: R.U.P.T.U.R.E
    R - Previous Uterine scar
    U - Unrelenting, severe pain
    P - Pallor, hypotension (shock)
    T - Tearing sensation
    U - Uterine contour change (may be palpable)
    R - Recession of presenting part (felt on exam)
    E - Emergency! (Fetal distress, need for surgery)
  • Think: "Scar + Shock + Scream = STAT Section".

High-Frequency NCLEX Topics This is a classic High-Yield NCLEX-RN question. It tests: 1. Prioritization in an emergency. 2. Knowledge of obstetric emergencies and their distinct presentations. 3. Application of the nursing process (assessment data leading to a specific, life-saving intervention). 4. Understanding the risks associated with VBAC and oxytocin augmentation.
Watch Out for Question Variations!
  • Shift in Focus: The question could ask for the "priority nursing diagnosis" (Ineffective Tissue Perfusion related to hemorrhage) or the "expected outcome" after intervention (Client will maintain hemodynamic stability as evidenced by BP within normal limits).
  • Change in Data: If the scenario described painless, bright red bleeding, the priority would shift to placenta previa, and the intervention would be to avoid vaginal exams and prepare for cesarean delivery.
  • Post-Delivery Focus: A follow-up question might ask about care for the client after a uterine rupture repair, focusing on monitoring for signs of continued bleeding/infection and providing emotional support for the potential loss of the uterus (hysterectomy).

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse in a Labor & Delivery unit. Your patient, Ms. Jones, is attempting a VBAC. She has been on a low-dose oxytocin drip for augmentation. Suddenly, she cries out, "It feels like something ripped!" You check the monitor: FHR drops to 80s with late decels. You assess her: she is pale, sweaty, and her BP is falling.

Nursing Intervention Strategy: 1. Immediate Action (Seconds): Key Point! Stop the oxytocin infusion by closing the roller clamp on the IV line dedicated to the medication. Do not wait for an order. 2. Call for Help (Simultaneously): Activate the emergency call system (e.g., "Code OB" or rapid response). Verbally delegate: "You, call the OB physician and anesthesia STAT. You, bring the crash cart and hemorrhage kit." 3. Prepare for Surgery: While others are calling, you or another nurse should immediately start preparing the patient for the OR: remove any jewelry, ensure consent is on file (or obtain emergency consent), and begin the surgical prep per protocol. 4. Supportive Measures (Done by Team): - Administer high-flow oxygen via non-rebreather mask. - Increase the rate of the main IV line (lactated Ringer's or normal saline) with a pressure bag to rapidly infuse fluids. - Obtain vital signs continuously. - Monitor FHR if possible, but preparation for delivery takes precedence. 5. Documentation: Document everything concisely and accurately: time of event, patient's statement, assessment findings (vitals, FHR strip), actions taken (oxytocin stopped, who was notified), and patient's response.
Nursing Procedure & Medication Flow
  • Oxytocin Administration: Always administered via an IV pump for precise control. The line should be piggybacked into a main IV line so it can be stopped instantly without losing IV access. Know your facility's protocol for starting and titrating doses.
  • Emergency Cesarean Preparation: This is a team effort. Know the location of emergency supplies (surgical packs, hemorrhage medication kit like tranexamic acid, blood products). The nurse often has the role of coordinating communication between the OB team, anesthesia, NICU, and the patient's family.
  • Fluid Resuscitation: Use large-bore IV catheters (16- or 18-gauge). In massive hemorrhage, blood transfusion will be needed. Know your protocols for massive transfusion protocols (MTP).

A Word from Your Senior Nurse "Nursing in L&D is a beautiful mix of joy and high-stakes vigilance. A patient with a uterine scar is not 'just another labor patient.' You are her safety net. Trust your assessment. If she describes a pain that is qualitatively different—'tearing,' 'ripping,' 'something popped'—take it with the utmost seriousness. Never ignore maternal instinct or a nurse's gut feeling that something is wrong. In an emergency like this, your ability to act decisively without hesitation, to stop the oxytocin and mobilize the team, is what saves lives. On the NCLEX, they are testing if you can make that critical leap from data to action. In real life, you'll be doing it for real."

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