Cervical length after cerclage: comparison between laparoscopic and vaginal approach

Area of Science:

• Maternal-Fetal Medicine
• Surgical Obstetrics
• Diagnostic Ultrasound

Background:

• Cervical insufficiency (CI) poses a risk for preterm birth.
• Cervical cerclage is a procedure to prevent premature cervical dilation.
• Both transvaginal cervical cerclage (TVC) and laparoscopic abdominal cerclage (LAC) are used for CI management.

Purpose of the Study:

• To compare sonographic changes in cervical length after TVC versus LAC placement in patients with CI.
• To evaluate the efficacy of different cerclage methods in maintaining cervical length during pregnancy.

Main Methods:

• Retrospective analysis of 38 patients with CI undergoing prophylactic LAC or TVC.
• Comparison of cervical length measurements before and after cerclage using ultrasound.
• Statistical analysis included Mann-Whitney U test and Fisher's exact test.

Main Results:

• Cervical length prior to surgery was similar between LAC and TVC groups.
• Post-cerclage, the distance from the tape to the external os was significantly different (LAC: 31.5 mm vs. TVC: 13.5 mm).
• Cervical length shortened significantly in the TVC group (26.6 mm to 13.2 mm) but remained unchanged in the LAC group.

Conclusions:

• Laparoscopic abdominal cerclage (LAC) is associated with superior preservation of cervical length compared to transvaginal cervical cerclage (TVC).
• LAC may offer better outcomes for patients with cervical insufficiency regarding cervical length maintenance throughout pregnancy.