title: Prophylactic cerclage in pregnancy. Effect in women with a history of conization.
abstract: OBJECTIVE
  To evaluate the effect of prophylactic cerclage on the course of pregnancy in women with prior conization.
  
  
  METHODS
  In a retrospective, observational study, the outcome of pregnancies in 69 women with (n = 30) and without (n = 39) cerclage who previously underwent conization was evaluated regarding hospitalization due to threatened preterm labor and delivery before 37 weeks of gestation.
  
  
  RESULTS
  The occurrence of preterm delivery was 23.3% in the cerclage group and 20.5% in the control group (P = .78). Women with prophylactic cerclage were hospitalized significantly more often due to threatened premature labor: with cerclage, 66.7%; without cerclage, 33.3% (P = .006).
  
  
  CONCLUSIONS
  Prophylactic cerclage should be used more sparingly in women with a history of conization because it does not prevent premature delivery and tends to induce preterm uterine contractions.
authors.affiliation: Department of Gynecology and Obstetrics, University of Vienna, Vienna General Hospital, Austria.
authors.forename: H
authors.initials: H
authors.lastname: Zeisler
authors.forename: E A
authors.initials: EA
authors.lastname: Joura
authors.forename: D
authors.initials: D
authors.lastname: Bancher-Todesca
authors.forename: E
authors.initials: E
authors.lastname: Hanzal
authors.forename: G
authors.initials: G
authors.lastname: Gitsch
mesh_terms: D000328:Adult; D002584:Cervix Uteri / Q000473:pathology / Q000601:surgery*; D002585:Cesarean Section; D019092:Conization; D005260:Female; D005322:Premature Rupture of Fetal Membranes; D005865:Gestational Age; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011183:Postoperative Complications; D011247:Pregnancy; D012189:Retrospective Studies; D015145:Tocolysis; D002581:Uterine Cervical Incompetence / Q000601:surgery*; D014590:Uterine Contraction