title: Effect of cerclage on labor course and obstetric outcome: a case-control study.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effects of cervical cerclage on labor course and obstetric outcome.
  
  
  METHODS
  In a retrospective case-control study, we compared labor course, total labor duration, and obstetric complications in 127 women who received cervical cerclage with 254 controls.
  
  
  RESULTS
  There was no significant difference in the duration of the first stage of labor (477 ± 576 vs. 373 ± 437 min, p = 0.075) or the second stage of labor (18 ± 17 vs. 20 ± 19 min, p = 0.287) between the 2 groups. In the multivariate analysis, women in the cerclage group were found to be significantly more likely to have a prolonged latent phase (odds ratio [OR], 2.802; 95% confidence interval [CI], 1.103-7.120; p = 0.030), cervical laceration (OR, 15.984; 95% CI, 3.169-80.624; p = 0.001), and treatment with tocolytics (OR, 2.580; 95% CI, 1.217-5.468; p = 0.013) than the control group. No significant difference was noted in cesarean delivery rate.
  
  
  CONCLUSIONS
  Cervical cerclage is more likely to be associated with a prolonged latent phase and minor obstetric complications, but not with a difference in the total duration of labor or increased cesarean delivery rate.
authors.affiliation: Department of Obstetrics and Gynecology, College of Medicine, Catholic University of Korea, Seoul, Korea.
authors.forename: Jae Eun
authors.initials: JE
authors.lastname: Shin
authors.forename: Jong Chul
authors.initials: JC
authors.lastname: Shin
authors.forename: Sa Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Young
authors.initials: Y
authors.lastname: Lee
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D023802:Cerclage, Cervical / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007743:Labor, Obstetric / Q000502:physiology*; D007744:Obstetric Labor Complications / Q000453:epidemiology / Q000209:etiology; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D014219:Trial of Labor; D002581:Uterine Cervical Incompetence / Q000453:epidemiology / Q000503:physiopathology / Q000601:surgery