A 28-year-old multiparous woman (G3P2) at 28 weeks gestation presents with painless vaginal bleeding for 2 hours. She denies abdominal pain or contractions. Vital signs are stable (BP 128/82, HR 88, RR 16). On speculum examination, there is moderate vaginal bleeding with no cervical lesions. Abdominal examination is soft and non-tender. Ultrasound confirms a normally-positioned placenta with no evidence of previa. Fetal heart rate is 145 bpm with normal variability. Hemoglobin is 10.8 g/dL. What is the most appropriate next step?

Explanation

## Diagnosis: Mild Abruptio Placentae (Concealed Hemorrhage) **Key Point:** This patient has painless vaginal bleeding with a normally-positioned placenta on ultrasound, suggesting **placental abruption** (likely small/mild). The stable vital signs, normal fetal heart rate, and absence of uterine tenderness indicate a contained bleed without acute fetal compromise. ### Clinical Classification of Abruption | Grade | Maternal Bleeding | Uterine Tenderness | Fetal Status | Coagulopathy | Management | |-------|-------------------|-------------------|--------------|--------------|-------------| | **Mild (I)** | Vaginal only | Absent/mild | Normal | No | Admit, monitor, expectant | | **Moderate (II)** | Vaginal + concealed | Present | May be stressed | Possible | Individualize; consider delivery | | **Severe (III)** | Massive ± concealed | Severe/woody | Distressed/dead | Yes (DIC) | Immediate delivery | **High-Yield:** In **mild abruption with stable mother and fetus**, expectant management with close fetal monitoring is appropriate. The goal is to prolong pregnancy for fetal maturity while maintaining safety. ### Management Pathway for This Case ```mermaid flowchart TD A[Painless vaginal bleeding<br/>at 28 weeks]:::outcome --> B{Placental location?}:::decision B -->|Previa| C[Admit, pelvic rest<br/>no digital exam]:::action B -->|Normal position| D{Maternal/fetal<br/>stability?}:::decision D -->|Unstable, fetal distress| E[Immediate delivery]:::urgent D -->|Stable, normal FHR| F[Admit for monitoring]:::action F --> G[Continuous CTG]:::action G --> H[Betamethasone for<br/>fetal lung maturity]:::action H --> I[Expectant management<br/>until 34 weeks or<br/>complications arise]:::action ``` **Clinical Pearl:** The absence of uterine tenderness and normal fetal heart rate with good variability are reassuring signs. Betamethasone is indicated at 28 weeks (between 24–34 weeks) to promote fetal lung maturity, but cesarean delivery at 34 weeks is **not** the plan unless complications develop. ### Why Admission and Monitoring? 1. **Fetal maturity** at 28 weeks is still suboptimal; prolonging pregnancy improves outcomes 2. **Concealed bleeding** may continue; hospital setting allows rapid intervention if deterioration occurs 3. **Betamethasone** reduces neonatal respiratory distress and mortality 4. **Continuous fetal monitoring** detects fetal distress early 5. **Serial hemoglobin checks** ensure no ongoing significant blood loss **Mnemonic:** **SAFE** approach to mild abruption: - **S**table vital signs and fetus → expectant management - **A**dmit for monitoring - **F**etal lung maturity (betamethasone) - **E**arly delivery only if complications [cite:Williams Obstetrics 26e Ch 34; ACOG Practice Bulletin 181]