A 32-year-old primigravida at 34 weeks gestation presents to the emergency department with sudden onset of severe abdominal pain and vaginal bleeding. She reports a history of hypertension (BP 160/100 mmHg currently) and denies any recent trauma. On examination, the uterus is tender and woody hard. Fetal heart rate is 90 bpm (baseline 140 bpm). Ultrasound shows a retroplacental clot measuring 4 cm × 3 cm. Her hemoglobin is 9.2 g/dL (baseline 11.5 g/dL), and coagulation profile shows PT 16 s, aPTT 42 s, fibrinogen 120 mg/dL, and D-dimer markedly elevated. What is the most appropriate immediate management?

Explanation

## Clinical Diagnosis: Placental Abruption with Fetal Distress and DIC **Key Point:** This patient has grade 3 (severe) abruption with: - Hemodynamic instability (hypertension + tachycardia) - Fetal distress (bradycardia 90 bpm, baseline 140) - Consumptive coagulopathy (low fibrinogen 120 mg/dL, prolonged PT/aPTT, elevated D-dimer) - Significant retroplacental clot on ultrasound ## Management Algorithm for Abruption ```mermaid flowchart TD A[Suspected Abruption]:::outcome --> B{Hemodynamic stability?}:::decision B -->|Stable, viable fetus| C[Expectant management<br/>if bleeding controlled]:::action B -->|Unstable OR fetal distress| D[Correct coagulopathy<br/>FFP, cryo, platelets]:::action D --> E[Emergency cesarean]:::urgent C --> F[Corticosteroids + monitoring]:::action F --> G[Delivery when stable]:::outcome ``` **High-Yield:** Grade 3 abruption (>50% placental separation) is an **obstetric emergency**. The combination of: - Fetal bradycardia (sign of placental insufficiency) - DIC (fibrinogen <150 mg/dL, PT/aPTT prolonged) - Maternal hemodynamic stress ...mandates **immediate delivery** regardless of gestational age. **Clinical Pearl:** Do NOT delay cesarean for "fetal lung maturity" when there is active fetal compromise and maternal DIC. The risk of maternal hemorrhage, amniotic fluid embolism, and fetal death outweighs prematurity morbidity. ## Coagulopathy Correction Protocol | Component | Target | Transfusion | |-----------|--------|-------------| | Fibrinogen | >100 mg/dL | Cryoprecipitate 10 units | | Platelets | >50,000/μL | Platelet concentrate | | PT/aPTT | Normalize | FFP 15 mL/kg | | Hgb | >7 g/dL | PRBC as needed | **Mnemonic: CRASH-C** (for massive transfusion protocol in obstetric hemorrhage): - **C**all for help - **R**aise legs (Trendelenburg) - **A**irway assessment - **S**tart large-bore IV × 2 - **H**ematology (labs: CBC, PT/aPTT, fibrinogen, D-dimer) - **C**oagulopathy correction (FFP, cryo, platelets) **Warning:** Expectant management is contraindicated when fetal distress is present. Magnesium sulfate is for neuroprotection in preterm labor, NOT for abruption with fetal compromise.