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1. History based indication-
→ RPL of 2nd trimester (more than or equal to2)
→ H/O PTL (Preterm Labor)
2. USG based indication
→ Length of cervix less than 2.5cm + pt. giving H/O more than 1 second trimester abortion
3. Emergency Cerclage/ Rescue Cerclage
→ Cervix has begun dilating then do cervical cerclage. In this remember: -
1. Dilation of cervix less than 4cm
2. Membranes should not be ruptured
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