الفهرس 
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Abstract
Preterm pre-labor rupture of membranes (PPROM) occurs as the chorioamniotic membrane breaks before 37 weeks of pregnancy or before onset of labour. PPROM complicates only 2%of pregnancies but is associated with 30% of preterm deliveries.
Patients with PPROM are often admitted to the hospital for an extended amount of time, and they often give birth to premature babies that need neonatal intensive care.
Predicting the time to delivery (latency) is complex, resulting in confusion for both the patient and the health care provider. The ability to determine delivery delay could aid in determining the need for particular treatments such as hospitalization, comprehensive supervision, antenatal steroids at the right time, and magnesium sulphate for neuroprotection.
In both singletons and twin gestations, using of transvaginal ultrasound for determining cervical length (CL) has been shown to be effective for prediction of the probability of preterm delivery with intact membranes in women with previous history of preterm Birth (PTB).
Serial transvaginal ultrasound has been shown to be not associated with increased risk in women with PPROM, with no noticeable rise in endometritis, chorioamnionitis, or neonatal infection.
However, since transvaginal ultrasound was historically ignored in the case of ruptured membranes, it has only been studied infrequently in the management of PPROM.