A 28-year-old multiparous woman at 30 weeks of gestation presents with regular uterine contractions every 3–4 minutes and vaginal bleeding. Cervical examination reveals 3 cm dilation and 70% effacement. Speculum examination shows pooling of fluid consistent with rupture of membranes. Fetal heart rate is 145 bpm and reactive. What is the most appropriate next step in management?

Explanation

## Clinical Scenario Analysis This patient presents with **preterm labour with preterm premature rupture of membranes (PPROM) at 30 weeks** with: - Regular contractions (every 3–4 minutes) - Progressive cervical dilation (3 cm) and effacement (70%) - Confirmed rupture of membranes (pooling on speculum) - Reassuring fetal heart rate - Vaginal bleeding (likely from cervical trauma or placental cause) ## Key Distinctions: PPROM vs. Preterm Labour **High-Yield:** PPROM (rupture of membranes before 37 weeks, before labour onset) changes management: - **Infection risk** is the primary concern (chorioamnionitis, neonatal sepsis) - **Tocolysis is generally NOT indicated** (membranes already ruptured; tocolytics do not improve outcomes and may mask infection) - **Antibiotics are mandatory** (reduce maternal/neonatal infection and prolong latency period) ## Management of PPROM at 30 Weeks ### 1. Antenatal Corticosteroids **Key Point:** Betamethasone remains indicated at 30 weeks (within 24–34 week window) for: - Fetal lung maturation - Reduction of IVH and neonatal mortality - Effect independent of membrane rupture status ### 2. Antibiotics (Mandatory in PPROM) **Mnemonic: AAIP** — **Ampicillin, Aminoglycoside, Interval, Prophylaxis** | Antibiotic | Dose | Interval | Duration | |------------|------|----------|----------| | **Ampicillin** | 500 mg IV | Every 6 hours | 7 days (or until delivery if <7 days) | | **Gentamicin** | 5 mg/kg IV | Once daily | 7 days (or until delivery if <7 days) | **Clinical Pearl:** Broad-spectrum coverage (ampicillin + gentamicin) is used because: - Ampicillin covers Group B Streptococcus (GBS) and Listeria - Gentamicin covers gram-negative organisms - Combined regimen reduces chorioamnionitis and neonatal sepsis **High-Yield:** Antibiotics are given **immediately upon diagnosis of PPROM**, not deferred until labour is "established." Early antibiotics: - Reduce maternal chorioamnionitis by ~50% - Reduce neonatal sepsis - Prolong latency period (median gain: 7 days) ### 3. Tocolysis in PPROM **Warning:** Tocolytics (nifedipine, indomethacin, atosiban) are **NOT routinely recommended** in PPROM because: - Membranes are already ruptured; tocolytics do not prevent labour onset - Tocolytics may mask signs of infection (fever, maternal tachycardia) - No clear benefit on neonatal outcomes in PPROM - May increase risk of chorioamnionitis **Exception:** Some centres use short-term tocolysis (24–48 hours) to allow steroid administration and in-utero transfer, but this is NOT standard of care. ### 4. Expectant Management **Key Point:** At 30 weeks with PPROM and reassuring fetal status, **expectant (conservative) management** is appropriate: - Admit to hospital for continuous fetal monitoring - Monitor for signs of infection (maternal fever, uterine tenderness, fetal tachycardia) - Await spontaneous labour or deliver if infection develops - Neonatal outcome at 30 weeks is good (~90% survival with minimal morbidity) ## Why This Answer Is Correct The combination of: 1. **Betamethasone** (fetal neuroprotection) 2. **Ampicillin + gentamicin** (infection prophylaxis, mandatory in PPROM) 3. **Expectant management** (avoid unnecessary intervention; monitor for chorioamnionitis) represents the standard of care for PPROM at 30 weeks with reassuring fetal status. [cite:RCOG Green-top Guideline 73, ACOG Practice Bulletin 188]