RESUMO
OBJECTIVE: To explore the clinical characteristics of pregnant uterine rupture, enhance its early diagnosis rate and improve its prognosis. METHODS: For this retrospective study, a total of 55 143 delivery cases at Tongzhou District Maternal & Child Health Hospital from January 1, 2003 to May 31, 2012 was analyzed. There were 2490 cases of scarred uterus and 68 cases had uterine rupture. And 62 of them belonged to scarred uterus rupture. And there were 52 653 cases of non-scarred uterus childbirth and 6 of them had rupture. RESULTS: Significant differences existed in the rupture of scarred versus non-scarred uterus and maternal versus primipara women. Uterus rupture usually occurred at the incomplete rupture position of original surgical scar at 39 weeks or more. The scar thickness of lower uterine segment was ≤ 3 mm on ultrasound. Three cases with laparoscopic myoma removal within 1 year had complete rupture at 36-38 weeks. Postpartum hemorrhage incidence was 42.65%. There were two cases of hysterectomy and 11 cases of neonatal asphyxia. CONCLUSION: For second pregnancy of cesarean section, pregnancy should be terminated before 39 weeks if scar thickness of lower uterine segment is ≤ 3 mm. Late rupture is to be monitored closely for those with laparoscopic myoma removal within 1 year. Meanwhile, we should strengthen the management of migrant and unemployed women.