Incompetent Cervix & Cerclag

Incompetent Cervix & Cerclag


This is a condition in pregnancy where the cervix begins to open (dilate) too early, often without pain or contractions, typically in the second trimester (around 16–24 weeks). It can lead to miscarriage or preterm birth.

Causes / Risk Factors:

Previous second-trimester pregnancy loss without pain

Cervical trauma (e.g., from D&C, cone biopsy, or LEEP procedure)

Congenital cervical abnormalities

Multiple gestations (twins, triplets, etc.)

History of cervical insufficiency in prior pregnancy

Symptoms (may be subtle or absent):

Pelvic pressure

Mild cramping

Vaginal discharge or spotting

Feeling of fullness in the pelvis

Sudden rupture of membranes

Cervical Cerclage

This is a surgical procedure to stitch the cervix closed to help prevent early opening. It's usually done between 12–24 weeks of pregnancy.

Types of Cerclage:

History-indicated cerclage: Done prophylactically around 12–14 weeks due to a prior history.

Ultrasound-indicated cerclage: Done when a short cervix (<25mm) is found on ultrasound before symptoms develop.

Emergency/rescue cerclage: Done when the cervix is already dilating but membranes are still intact.

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