An incompetent cervix, also called a cervical insufficiency, is a condition that occurs when weak cervical tissue causes or contributes to premature birth or the loss of an otherwise healthy pregnancy.
Before pregnancy, your cervix — the lower part of the uterus that connects to the vagina — is normally closed and rigid. As pregnancy progresses and you prepare to give birth, the cervix gradually softens, decreases in length (effaces) and opens (dilates). If you have an incompetent cervix, your cervix might begin to open too soon — causing you to give birth too early.
An incompetent cervix can be difficult to diagnose and, as a result, treat. If your cervix begins to open early, your health care provider might recommend preventive medication during pregnancy, frequent ultrasounds or a procedure that closes the cervix with strong sutures (cervical cerclage).
Mar. 12, 2015
- Berghella V, et al. Cervical insufficiency. http://www.uptodate.com/home. Accessed Dec. 14, 2014.
- Gabbe SG, et al. Obstetrics: Normal and Problem Pregnancies. 6th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2012. http://www.clinicalkey.com. Accessed Dec. 14, 2014.
- Papadakis MA, ed., et al. Current Medical Diagnosis & Treatment 2015. 54th ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.mhmedical.com/book.aspx?bookID=1019. Accessed Dec. 14, 2014.
- Cunningham FG, et al. Williams Obstetrics. 24th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://accessmedicine.mhmedical.com/book.aspx?bookid=1057. Accessed Dec. 14, 2014.
- Cervical insufficiency. The Merck Manual Professional Edition. http://www.merckmanuals.com/professional/gynecology_and_obstetrics/abnormalities_of_pregnancy/cervical_insufficiency.html#v1073896. Accessed Dec. 14, 2014.
- American College of Obstetricians and Gynecologists (ACOG) Committee on Practice Bulletins — Obstetrics. ACOG Practice Bulletin No. 142: Cerclage for the management of cervical insufficiency. Obstetrics & Gynecology. 2014;123:372.
- What can I do to promote a healthy pregnancy? National Institute of Child Health and Human Development. http://www.nichd.nih.gov/health/topics/preconceptioncare/conditioninfo/pages/healthy-pregnancy.aspx. Accessed Dec. 18, 2014.
- Harms RW (expert opinion). Mayo Clinic, Rochester, Minn. Dec. 19, 2014.
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