A 32-year-old multigravida (G3P2) at 34 weeks gestation presents with sudden onset of severe abdominal pain and vaginal bleeding. On examination, she is hemodynamically unstable (BP 90/60, HR 110/min). Abdominal palpation reveals a tense, tender uterus. On ultrasound, the fetus is in transverse lie with the back anterior, and there is a large retroplacental clot. The patient is in active labor. What is the most appropriate immediate management?

Explanation

## Clinical Presentation & Diagnosis This is a case of **transverse lie with placental abruption and active labor** — a true obstetric emergency: - Transverse lie at 34 weeks (fetus cannot deliver vaginally) - Placental abruption (retroplacental clot, vaginal bleeding) - Maternal hemodynamic instability (BP 90/60, HR 110) - Active labor (uterine contractions with pain) ## Why This Is an Emergency **High-Yield:** Transverse lie in active labor with placental abruption is an absolute indication for **emergency cesarean section**. The combination of: 1. Fetal malpresentation (transverse) — vaginal delivery impossible 2. Placental abruption — risk of massive hemorrhage and fetal death 3. Active labor — imminent delivery 4. Hemodynamic instability — maternal shock **Key Point:** ECV is contraindicated in active labor and in the presence of placental abruption (risk of further placental separation and fetal compromise). ## Management Algorithm ```mermaid flowchart TD A[Transverse lie + Active labor + Abruption]:::outcome --> B{Hemodynamically stable?}:::decision B -->|No| C[Emergency cesarean section]:::action B -->|Yes| D{Fetal heart rate normal?}:::decision D -->|No| C D -->|Yes| E[Urgent cesarean section]:::action C --> F[Prepare OR, call anesthesia, activate massive transfusion protocol]:::action E --> G[Standard cesarean preparation]:::action ``` ## Tocolytics Role **Clinical Pearl:** Tocolytics (nifedipine, terbutaline) may be administered briefly to: - Reduce uterine contractions - Buy time for anesthetic preparation - Reduce risk of uterine rupture during cesarean But they do NOT delay the cesarean section — it must proceed urgently. ## Why Not Other Options - **ECV in active labor:** Contraindicated; high risk of placental separation, cord prolapse, and fetal injury. - **Amniotomy:** Increases risk of cord prolapse (fetus in transverse lie) and accelerates labor toward impossible vaginal delivery. - **Conservative management:** Maternal hemorrhage and fetal death are imminent; delay is fatal.