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Related Experiment Video

Updated: Mar 6, 2026

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
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Does cervical cerclage decrease preterm birth in twin pregnancies with a short cervix?

Tracy M Adams1,2, Timothy J Rafael1, Nadia B Kunzier1,2

  • 1a Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine , Winthrop University Hospital , Mineola , NY , USA.

The Journal of Maternal-Fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
|March 22, 2017
PubMed
Summary
This summary is machine-generated.

Cerclage did not reduce preterm birth in twin gestations with short cervix (≤2.5 cm). However, for a shorter cervix (≤1.5 cm), cerclage significantly decreased preterm birth rates before 35 weeks.

Keywords:
Cerclagecervical lengthmultiple gestationpessarypreterm birthprogesterone

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Area of Science:

  • Maternal-Fetal Medicine
  • Perinatology
  • Obstetrics

Background:

  • Short cervix in twin gestations is a risk factor for preterm birth.
  • Cerclage is a procedure to reinforce the cervix.

Purpose of the Study:

  • To evaluate the effectiveness of cerclage in reducing preterm birth in twin gestations with a mid-trimester short cervix.

Main Methods:

  • Retrospective cohort study of twin gestations with cervical length ≤2.5 cm before 24 weeks.
  • Comparison of preterm birth rates (<35 weeks) between cerclage and non-cerclage groups.
  • Sub-group analysis for cervical length ≤1.5 cm.

Main Results:

  • No significant difference in preterm birth rate (<35 weeks) for cervical length ≤2.5 cm (34.9% vs 48.7%).
  • Significant reduction in preterm birth rate (<35 weeks) for cervical length ≤1.5 cm with cerclage (37% vs 71.4%).
  • Adjusted risk ratio for preterm birth in the ≤1.5 cm group was 0.49 (0.26-0.93).

Conclusions:

  • Cerclage for cervical length ≤2.5 cm in twin gestations does not decrease preterm birth.
  • Cerclage for cervical length ≤1.5 cm in twin gestations is associated with a significantly decreased rate of preterm birth before 35 weeks.