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Published on: January 17, 2019
Incidence of Recurrent Uterine Rupture: A Systematic Review and Meta-analysis
Shunya Sugai1, Kaoru Yamawaki, Kazufumi Haino
1Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan.
Objective:
We aimed to quantify the incidence of recurrent uterine rupture in pregnant women.
Data Sources:
A literature search of PubMed, Web of Science, Cochrane Central, and ClinicalTrials.gov for observational studies was performed from 2000 to 2023.
Methods Of Study Selection:
Of the 7,440 articles screened, 13 studies were included in the final review. We included studies of previous uterine ruptures that were complete uterine ruptures , defined as destruction of all uterine layers, including the serosa. The primary outcome was the pooled incidence of recurrent uterine rupture. Between-study heterogeneity was assessed with the I2 value. Subgroup analyses were conducted in terms of the country development status, year of publication, and study size (single center vs national study). The secondary outcomes comprised the following: 1) mean gestational age at which recurrent rupture occurred, 2) mean gestational age at which delivery occurred without recurrent rupture, and 3) perinatal complications (blood loss, transfusion, maternal mortality, and neonatal mortality).
Tabulation, Integration, And Results:
A random-effects model was used to pool the incidence or mean value and the corresponding 95% CI with R software. The pooled incidence of recurrent uterine rupture was 10% (95% CI 6-17%). Developed countries had a significantly lower uterine rupture recurrence rate than less developed countries (6% vs 15%, P =.04). Year of publication and study size were not significantly associated with recurrent uterine rupture. The mean number of gestational weeks at the time of recurrent uterine rupture was 32.49 (95% CI 29.90-35.08). The mean number of gestational weeks at the time of delivery without recurrent uterine rupture was 35.77 (95% CI 34.95-36.60). The maternal mortality rate was 5% (95% CI 2-11%), and the neonatal mortality rate was 5% (95% CI 3-10%). Morbidity from hemorrhage, such as bleeding and transfusion, was not reported in any study and could not be evaluated.
Conclusion:
This systematic review estimated a 10% incidence of recurrent uterine rupture. This finding will enable appropriate risk counseling in patients with prior uterine rupture.
Systematic Review Registration:
PROSPERO, CRD42023395010.
