OBSTETRICS Intra-Amniotic Sludge, Short Cervix, and Risk of Preterm Delivery

Objective: To evaluate the association between intra-amniotic sludge seen at cervical ultrasound and preterm delivery. Method: This retrospective study included women at high risk for preterm delivery who were referred for second trimester cervical length measurement by ultrasound between 18 and 32 weeks’ gestation. Patients with multiple gestations, cerclage, or preterm labour were excluded. Ultrasound images were reviewed by two independent observers and divided into three groups: (1) no amniotic sludge, (2) light sludge, and (3) dense sludge in the amniotic fluid. The primary outcome measures were delivery within 14 days of examination and delivery before 34 weeks ’ gestation. Logistic regression analyses were performed to adjust for confounding factors. Results: Eighty-nine patients met the inclusion criteria. Mea