Change in cervical length after prophylactic cerclage

Edmund F. Funai, Michael J. Paidas, Andrei Rebarber, Loraine O'Neill, Todd J. Rosen, Bruce K. Young

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


Objective: To determine changes in length of incompetent cervices after cerclage, using transvaginal ultrasound. Methods: Patients were enrolled in a prospective, observational study under an Institutional Review Board- approved protocol. McDonald or Shirodkar sutures were placed according to physician preference. Pre- and postcerclage cervical lengths were measured within 72 hours of the procedure. At each examination, the first measurement was discarded, and a mean of the subsequent three measurements was calculated. Results: Twenty-one Shirodkar and ten McDonald operations were done. The mean (± standard deviation) precerclage cervical length was 2.7 ± 0.9 cm and the postcerclage cervical length was 3.6 ± 0.9 cm (P < .001, paired t test). Conclusion: Prophylactic cerclage results in measurable increases in cervical length, which might contribute to the success of the procedure. Further study is needed to determine whether the degree of cervical lengthening after cerclage predicts term delivery.

Original languageEnglish
Pages (from-to)117-119
Number of pages3
JournalObstetrics and Gynecology
Issue number1
StatePublished - Jul 1999
Externally publishedYes


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