Incompetence of cervix uteri

**Definition:** A condition of the cervix uteri, caused by the weakness of the cervical tissue and intrauterine pressure as pregnancy progresses. This condition is characterised by dilation and effacement of the cervix before reaching a term pregnancy. This condition may lead to a miscarriage during the second trimester, or an early preterm birth during the third trimester.

**Exclusions:** - Fetus or newborn affected by incompetence of cervix uteri - Maternal care for cervical incompetence