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Define PROM and PPROM.
- PROM is rupture of membranes before onset of labour.
- PPROM is PROM occurring before 37 completed weeks of gestation.
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What is the incidence of PROM/PPROM?
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What are the risk factors for PPROM?
- Previous PPROM/preterm birth, genital-tract infection, cervical insufficiency, antepartum bleeding, uterine overdistension, smoking, poor nutrition, and invasive procedures.
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What are the common clinical features of PROM?
- Sudden gush or persistent leaking of clear fluid per vaginam, with decreased uterine size or reduced liquor in some cases.
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How will you confirm the diagnosis of PROM?
- Sterile speculum examination for pooling of liquor, nitrazine/pH test, ferning test, and ultrasound assessment of amniotic fluid. Avoid routine digital vaginal examination.
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Why is a digital vaginal examination avoided in suspected PPROM?
- It increases the risk of ascending infection and may shorten the latency period to delivery.
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What differential diagnoses should be considered for watery vaginal discharge?
- Urinary incontinence, physiological leukorrhoea, vaginal infection, semen, and excess cervical mucus.
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What maternal complications can occur in PPROM?
- Chorioamnionitis, maternal sepsis, placental abruption, cord prolapse, retained placenta, and postpartum endometritis.
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What fetal and neonatal complications can occur?
- Prematurity and its complications, fetal distress, cord compression/prolapse, neonatal sepsis, pulmonary hypoplasia and limb deformities in very early prolonged PPROM.
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What clinical features suggest chorioamnionitis?
For viva, lead with the distinction:
PROM is before labour; PPROM is before labour and before 37 weeks. Current guidance also highlights particularly high maternal risk in previable/periviable PPROM, requiring early senior obstetric and neonatal counselling.
ACOG guidance and a 2026
systematic review of guidelines support gestation-specific management.