The Independent Associations of a Short Cervix, Positive Fetal Fibronextin, Amniotic Fluid Sludge, and Cervical Funneling with Spontaneous Preterm Birth in Twin Pregnancies
In twin pregnancies, a short cervical length on ultrasound, as well as a positive fetal fibronectin test, are both associated with an increased risk of preterm birth. In this study, we found that the presence of amniotic fluid sludge (particulate matter seen on ultrasound just above the cervix) also increased the risk of preterm birth.
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