Study setting
A retrospective analysis of uterine rupture cases was conducted at Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, from June 1, 2013 to December 31, 2020. This hospital is a tertiary referral center for critical and severe diseases of pregnant and delivery women and has the largest number of deliveries in East China region. This study was approved by the Ethics Review Committee of Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine (KS20268).
We excluded cases with: pregnancies before 20 weeks, uterine dehiscence, traumatic of motor vehicle accidents.