A 28-year-old multigravida (G3P2) at 28 weeks gestation presents with mild vaginal bleeding and mild abdominal pain for 2 hours. Vital signs: BP 128/82 mmHg, HR 88 bpm, RR 18, temp 37°C. Abdominal examination reveals mild tenderness over the fundus; uterus is soft and non-tender on palpation. Fetal heart rate is 145 bpm with normal variability. Ultrasound shows a small retroplacental clot (2 cm) with no evidence of placental separation. Hemoglobin is 11.8 g/dL. Coagulation studies are normal. What is the most appropriate management?

Explanation

## Clinical Diagnosis: Mild Abruptio Placentae at Previable Gestation ### Severity Classification of Abruptio Placentae | Severity | Clinical Features | Maternal Outcome | Fetal Outcome | Management | |----------|------------------|------------------|---------------|-------------| | **Mild** | Vaginal bleeding, mild pain, stable vitals, normal coagulation | Good | Variable | Expectant (if <34 wks) | | **Moderate** | Bleeding + pain, mild shock, mild coagulopathy (fibrinogen 100–150) | Fair | Guarded | Delivery if ≥34 wks | | **Severe** | Heavy bleeding, shock, DIC, fetal distress | Poor | Poor | Emergency delivery | **Key Point:** This patient has **mild abruption** — small clot, stable hemodynamics, normal coagulation, reassuring fetal heart rate. ### Assessment of Stability **Clinical Pearl:** The absence of the "tetanic uterus" (board-like rigidity) and presence of normal fetal heart rate variability suggest limited placental separation and ongoing placental perfusion. - Hemoglobin 11.8 g/dL (normal for pregnancy) — no significant hemorrhage - BP 128/82 mmHg — no maternal shock - Fetal HR 145 bpm with normal variability — no fetal distress - Coagulation studies normal — no DIC - Retroplacental clot 2 cm — limited separation ### Management Algorithm for Previable Abruption ```mermaid flowchart TD A[Abruptio Placentae Diagnosed]:::outcome --> B{Gestational Age & Stability?}:::decision B -->|<34 weeks + Stable| C[Administer Corticosteroids]:::action C --> D[Betamethasone 12 mg IM x 2 doses, 24 hrs apart]:::action D --> E[Admit for Expectant Management]:::action E --> F[Daily NST, Weekly Ultrasound]:::action F --> G{Recurrent Bleeding or Fetal Distress?}:::decision G -->|Yes| H[Deliver Immediately]:::urgent G -->|No| I[Continue to 34 weeks if possible]:::action B -->|≥34 weeks + Stable| J[Deliver at Term]:::action B -->|Any Instability or DIC| K[Emergency Delivery]:::urgent ``` ### Why Correct Answer (Option B) is Correct **High-Yield:** At 28 weeks with mild abruption and stable mother/fetus, the goal is **fetal lung maturity** via corticosteroids while avoiding unnecessary preterm delivery. 1. **Corticosteroids** (betamethasone 12 mg IM × 2 doses, 24 hours apart) reduce neonatal respiratory distress syndrome, intraventricular hemorrhage, and mortality in preterm infants by ~30% 2. **Expectant management** — close monitoring allows continuation of pregnancy if no recurrent bleeding or fetal distress 3. **Admission** — enables continuous fetal monitoring and rapid intervention if abruption worsens 4. **Target delivery** — 34 weeks (when corticosteroid benefit plateaus and neonatal outcomes improve significantly) **Key Point:** Mild abruption at <34 weeks in a stable patient is NOT an indication for immediate delivery. Delivery is reserved for: - Recurrent or heavy bleeding - Fetal distress - Maternal hemodynamic instability - ≥34 weeks gestation [cite:Williams Obstetrics 26e Ch 34; ACOG Practice Bulletin 202]