Cerclage placement
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Cervical cerclage placement is a procedure where the cervix is sewn closed with stitches to prevent premature labor.

Overview

Indications[1][2]

A cervical cerclage is a procedure used to prevent preterm birth in women at risk of cervical insufficiency, ultimately to prevent potential miscarriage.

The primary indications for cerclage placement include a history of spontaneous preterm birth, a previous cerclage procedure, and diagnosed cervical insufficiency, often characterized by a cervical length of less than 25mm in the second trimester as measured via transvaginal ultrasound. Women with a history of multiple second-trimester losses or preterm deliveries related to cervical dilation may also benefit from cerclage. Additional indications include the presence of painless cervical shortening in the absence of contractions or membrane rupture, and in certain cases, cerclage may be considered for those with abnormal cervical findings discovered on ultrasound screening in asymptomatic women at high risk.

Surgical procedure[3][4]

The procedure involves multiple key steps:

  1. Preparation and Positioning: The patient is positioned in a lithotomy position, similar to that for a pelvic examination. After ensuring sterile technique, a speculum is inserted into the vagina to expose the cervix.
  2. Cervical Examination: The cervix is evaluated for abnormalities, such as shortening, dilation, or funneling. If no signs of infection or active labor are present, the decision to proceed with the cerclage is confirmed.
  3. Placement of the Cerclage: A purse-string suture (usually made of a non-absorbable material) is placed around the cervix. The suture is typically inserted at the level of the internal os, ensuring it is snug but being careful to avoid damage to the cervical tissue. The suture is then tied, effectively "closing" the cervix to prevent early dilation.
  4. Confirmation and Closure: The cervix is re-examined to ensure the suture is correctly placed. After confirming that the suture is secure, the speculum is removed, and the patient is monitored for complications, like bleeding.

Post-Procedure Care: The patient is usually monitored for a short period following the procedure, and they are advised to avoid heavy physical activity for several weeks post-cerclage.

Preoperative management

Patient evaluation

System Considerations
Airway Evaluate for Mallampati score, upper Bite Lip test, checking for lose or chipped dentition and overall keeping in mind that the airway tends to be edematous and friable in gravid patients.
Neurologic Complete a standard neurological exam, asking detailed questions about chronicity of lower back pain, any history of sciatica, spine surgery, and/or extremity weakness, numbness or tingling.
Cardiovascular Obtain a brief history of the patients cardiovascular tolerance before and during pregnancy and auscultate to rule out murmurs.
Pulmonary Obtain a detailed history on pulmonary diseases such as asthma, recent URI, or cough. No other special considerations beyond being aware of the standard pulmonary changes that occur in pregnancy.
Gastrointestinal Confirm if the patient is on medication for GERD and verify NPO status.
Hematologic Obtain a brief history on any history coagulopathy since neuraxial is a consideration for this procedure.
Other

Labs and studies

Patient preparation and premedication

Regional and neuraxial techniques

Intraoperative management

Monitoring and access

Induction and airway management

Positioning

Maintenance and surgical considerations

Emergence

Postoperative management

Disposition

Pain management

Potential complications

Procedure variants

Variant 1 Variant 2
Unique considerations
Indications
Position
Surgical time
EBL
Postoperative disposition
Pain management
Potential complications

References

  1. Klemm, P., Vayssière, C., & Marret, H. (2020). Cervical cerclage in prevention of preterm birth: A critical review of indications and efficacy. European Journal of Obstetrics & Gynecology and Reproductive Biology, 249, 31-37.
  2. Lyndon, A., Smith, R. S., & McIntire, D. D. (2021). Cervical cerclage: Indications, techniques, and outcomes. American Journal of Obstetrics and Gynecology, 224(4), 455-463.
  3. Coomarasamy, A., Small, R., & Cacciatore, S. (2017). Cervical cerclage for preventing preterm birth in women with a short cervix. Cochrane Database of Systematic Reviews, 2017(7)
  4. Klemm, P., Vayssière, C., & Marret, H. (2020). Cervical cerclage in prevention of preterm birth: A critical review of indications and efficacy. European Journal of Obstetrics & Gynecology and Reproductive Biology, 249, 31-37.