Core Nursing Explanation
Key Concept Analysis: This question tests the emergency management of a life-threatening obstetric complication:
Uterine rupture. Uterine rupture is a full-thickness tear of the uterine wall, most often associated with a previous cesarean scar. During labor, especially with oxytocin (a uterine stimulant), the uterus can over-contract, leading to rupture. The classic triad of symptoms includes: 1) Sudden, severe abdominal pain ("tearing" sensation), 2)
Non-reassuring fetal heart rate (FHR) patterns (e.g., prolonged bradycardia), and 3) Maternal hemodynamic instability (hypotension, tachycardia, thready pulse) due to intra-abdominal hemorrhage.
Answer Rationale: The nurse's
Key Point! immediate priority is to facilitate
emergency cesarean delivery (C-section). This is because uterine rupture is a
surgical emergency. The fetus is at immediate risk of hypoxia, anoxia, and death from placental separation and compromised blood flow. The mother is at risk of exsanguination from massive hemorrhage. The only definitive treatment is immediate surgery to deliver the fetus, control bleeding, and repair (or remove) the uterus. Preparing the client includes notifying the obstetrician, anesthesia team, and operating room (OR) staff STAT, and rapidly transporting the client to the OR.
Distractor Analysis:
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Watch out for confusion! Option ④ (Stop oxytocin, left lateral position) is a correct
supportive action and should be done, but it is not the
priority. Stopping the oxytocin infusion prevents further uterine stimulation, and left lateral positioning improves placental perfusion. However, these actions alone will not resolve the surgical catastrophe.
• Option ① (Administer oxygen) is also a supportive measure to maximize fetal and maternal oxygenation but does not address the root cause.
• Option ② (Insert IVs, fluid resuscitation) is critical for treating hypovolemic shock but is secondary to initiating the definitive surgical intervention. In a true emergency, IV access may be obtained en route to the OR or in the OR itself.
Related Concepts: This scenario highlights the
ABC (Airway, Breathing, Circulation) priority framework with a maternal-fetal twist. In obstetric emergencies, the fetus is considered a "second patient." When maternal circulation (C) is compromised (hypotension), fetal circulation is also compromised, making rapid delivery the ultimate intervention to save both lives. This is distinct from other emergencies where stabilizing the primary patient comes first.
Concept Summary
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Uterine Rupture: Complete tear of uterine wall; surgical emergency.
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Key Signs: Sudden tearing pain, FHR bradycardia, maternal shock (hypotension, tachycardia).
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Primary Risk Factor: Previous uterine surgery (e.g., C-section) + labor induction/augmentation.
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Definitive Treatment: Emergency cesarean delivery.
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Supportive Nursing Actions: Stop oxytocin, position left lateral, administer O2, establish IV access.
Side-by-Side Comparison!
| Condition | Key Features | Immediate Nursing Priority |
|---|
| Uterine Rupture | Previous C-section, tearing pain, FHR bradycardia, maternal shock. | Prepare for emergency C-section. (Surgical emergency) |
| Placental Abruption | Sudden dark vaginal bleeding, severe constant abdominal pain, rigid/tender uterus, fetal distress. | Emergency delivery (often C-section) due to fetal compromise and potential maternal coagulopathy (DIC). |
| Umbilical Cord Prolapse | Sudden FHR decelerations after ROM, visible/palpable cord in vagina. | Relieve cord pressure: Knee-chest or Trendelenburg position, manual elevation of presenting part. Prepare for immediate C-section. |
Anatomy, Physiology & Pharmacology Points
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Oxytocin (Pitocin): A hormone used to induce/augment labor by stimulating uterine contractions. It increases the risk of uterine hyperstimulation (tachysystole), which can lead to uterine rupture in a scarred uterus. Nurses must monitor contraction frequency, duration, and resting tone, and FHR response continuously.
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Pathophysiology of Shock: Rupture causes massive intra-abdominal bleeding → decreased venous return → decreased cardiac output → hypotension and tachycardia. Fetal bradycardia results from disrupted placental blood flow.
Memory Tips
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Acronym for Uterine Rupture Signs: Tearing pain,
Emergency,
Abnormal FHR,
Rupture (TEAR).
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Priority Reminder: "When mom tears, baby fears, OR is near!" This emphasizes the immediate need for surgical intervention.
High-Frequency NCLEX Topics
Uterine rupture is a classic
High Yield NCLEX topic. You must know: 1) The classic triad of symptoms, 2) The primary risk factor (previous C-section), 3) That it's a surgical emergency, and 4) How to prioritize interventions (definitive treatment over supportive care). Expect questions that test your ability to distinguish it from other obstetric emergencies like abruption or prolapse.
Watch Out for Question Variations!
• Instead of asking for the "priority action," the question might ask for the "nurse's
first action." The answer could then shift to option ④ (stop oxytocin/position), as that is the first independent nursing action before notifying the provider and preparing for surgery.
• The question could present a similar scenario but with a
non-reassuring FHR pattern without maternal shock. The priority might then be to stop the oxytocin, change position, and administer oxygen while notifying the provider, as a full rupture may not yet have occurred.