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Arch Gynecol Obstet ; 300(2): 305-312, 2019 08.
Article in English | MEDLINE | ID: mdl-31056734

ABSTRACT

OBJECTIVE: To evaluate the efficacy of cerclage in preventing preterm birth according to indication. STUDY DESIGN: Retrospective analysis of all women who underwent cerclage to prevent preterm birth in a university-affiliated medical-center (2007-2017). Multiple gestations were excluded. Cohort was divided to three subgroups according to cerclage indication: group A-primary prevention cerclage, performed during the first trimester, based on a history of cervical insufficiency; group B-secondary prevention cerclage, performed after sonographic visualization of asymptomatic cervical length shortening and previous preterm birth; and group C-tertiary prevention cerclage, performed at mid-trimester in women presenting with asymptomatic cervical dilatation. Primary outcome was gestational age at delivery. Secondary outcomes were maternal and neonatal complications. RESULTS: During the study period 273 women underwent cervical cerclage: group A-215 (79%), group B-25 (9%), and group C-33 (12%). Patients in group C had significantly lower gravidity and parity. Gestational age at cerclage was highest in group C and lowest in group A (22 vs. 13 weeks p < 0.001). Median gestational age at delivery was 37 + 3 weeks in groups A and B and 34 + 3 in group C. This difference persisted after controlling for potential confounders (p < 0.0001). Preterm birth prior to 34 weeks of gestation were 10.7% in group A, 16% in group B, and 33.33% in group C (p = 0.0021). Neonatal complications including: respiratory distress syndrome, intraventricular hemorrhage, and necrotizing enterocolitis, were clmore prevalent in group C. CONCLUSION: Cerclage was shown to be an acceptable measure in cases of an anticipated increased risk of preterm birth with a low rate of procedure associated complications. However, the number-needed-to-treat cannot be determined from our data, because a control group was lacking.


Subject(s)
Cerclage, Cervical/methods , Premature Birth/prevention & control , Primary Prevention/methods , Secondary Prevention/methods , Tertiary Prevention/methods , Uterine Cervical Incompetence/surgery , Adult , Cohort Studies , Female , Humans , Infant, Newborn , Middle Aged , Pregnancy , Retrospective Studies , Young Adult
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