Cervical Incompetence

Patsama Vichinsartvichai

MD., MClinEmbryol., 
EFOG-EBCOG., EFRM-ESHRE/EBCOG. 

Patients with congenital malformation of the uterus, such as a dysmorphic uterus or a septate uterus, may undergo surgery and subsequently become pregnant. However, there's another condition they need to be wary of: cervical incompetence. This is because both the uterus and the cervix originate from the same structure in the fetus, the Müllerian ducts. Therefore, patients with these abnormalities might inherently have a malfunctioning cervix as well.

Patients with cervical incompetence often do not exhibit symptoms. Some might experience minor vaginal bleeding as the cervix gradually thins and slowly opens. They usually do not feel any uterine contractions. Symptoms often begin between 18-20 weeks of pregnancy and may reoccur between 32-34 weeks. Labor pains will occur when the cervix opens significantly (more than 5 cm), leading to potential miscarriages or premature births shortly after the onset of symptoms. There are several treatment methods. Let's explore what these methods are today

To prevent cervical incompetence, doctors recommend undergoing an ultrasound to measure the length of the cervix at 11-12 weeks, 18-20 weeks, and 27-28 weeks of pregnancy (at least three times in total). This is because, during these stages of pregnancy, there can be changes in the uterus that might result in the shortening of the cervix. A cervical cerclage pessary might be inserted to prevent the cervix from shortening and opening.

Wishing everyone a safe and easy childbirth.


Dr. Pat

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