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How can cervical insufficiency cause a miscarriage?

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A miscarriage sometimes happens because there is a weakness of the cervix, called an insufficient cervix, which cannot hold the pregnancy. A miscarriage from an insufficient cervix usually occurs in the second trimester.

There are usually few symptoms before a miscarriage caused by cervical insufficiency. A woman may feel sudden pressure, her "water" may break, and tissue from the fetus and placenta may be expelled without much pain. An insufficient cervix can usually be treated with a "circling" stitch in the cervix in the next pregnancy, usually around 12 weeks. The stitch holds the cervix closed until it is pulled out around the time of delivery. The stitch may also be placed even if there has not been a previous miscarriage if cervical insufficiency is discovered early enough, before a miscarriage does occur.

From: Pregnancy and Miscarriage WebMD Medical Reference

SOURCES: 

The March of Dimes.

National Institutes of Health.

American Pregnancy Organization.

Reviewed by Nivin Todd on July 13, 2017

SOURCES: 

The March of Dimes.

National Institutes of Health.

American Pregnancy Organization.

Reviewed by Nivin Todd on July 13, 2017

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What is used to monitor the progress of a miscarriage?

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