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What causes cervical incompetence? "There is some evidence to suggest that genetics may play a part here," says Rankins, explaining that weak cervical tissue can be part of congenital abnormalities.
Cervical weakness may cause miscarriage or preterm birth during the second and third trimesters. It has been estimated that cervical insufficiency complicates about 1% of pregnancies, and that it is a cause in about 8% of women with second trimester recurrent miscarriages. [2]
What causes cervical incompetence? "There is some evidence to suggest that genetics may play a part here," says Rankins, explaining that weak cervical tissue can be part of congenital abnormalities.
Cervical canal widening can be temporarily achieved by the insertion of dilators into the cervix. If the stenosis is caused by scar tissue, a laser treatment can be used to vaporize the scarring. [5] Finally, the surgical enlargement of the cervical canal can be performed by hysteroscopic shaving of the cervical tissue. [6]
A McDonald cerclage, described in 1957, is the most common, and is essentially a pursestring stitch used to cinch the cervix shut; the cervix stitching involves a band of suture at the upper part of the cervix while the lower part has already started to efface. [2] This cerclage is usually placed between 16 weeks and 18 weeks of pregnancy.
When dealing with a high-risk pregnancy that involves issues like cervical insufficiency or any of the conditions cited by ... and that vaginal infections in general can potentially cause preterm ...
In some women, cervical incompetence or cervical insufficiency occurs with the inability of the cervix to stay closed during the entire pregnancy. [46] [45] It does not cause first-trimester miscarriages. In the second trimester, it is associated with an increased risk of miscarriage.
Asherman's syndrome (AS) is an acquired uterine condition that occurs when scar tissue forms inside the uterus and/or the cervix. [1] It is characterized by variable scarring inside the uterine cavity, where in many cases the front and back walls of the uterus stick to one another.