标题：Identifying risk factors for cesarean scar pregnancy: a retrospective study of 79 cases
作者：Shi, Min; Zhang, Hui; Qi, Shasha; Liu, Wenhui; Liu, Ming; Zhao, Xingbo; Mu, Yulan
作者机构：[Shi, Min; Zhang, Hui; Qi, Shasha; Liu, Ming; Zhao, Xingbo; Mu, Yulan] Shandong Univ, Shandong Prov Hosp, Dept Obstet & Gynecol, Jinan 250021, Shandon 更多
通讯作者地址：[Mu, YL]Shandong Univ, Shandong Prov Hosp, Dept Obstet & Gynecol, Jinan 250021, Shandong, Peoples R China.
关键词：cesarean scar pregnancy; cesarean section; lower uterine segment
摘要：Objectives: To explore the possible risk factors for cesarean scar pregnancy (CSP), the incidence of which is increasing rapidly in China.; Material and methods: 79 patients with CSP and 69 non-CSP expectant mothers with at least 1 previous cesarean section were employed in the study. The obstetric histories of the participants were collected and analyzed using Chi square test.; Results: We found that 77.2% CSP patients had >= 3 pregnancies and only 36.2% women had a >= 3 pregnacies in non-CSP group. During the previous cesarean delivery, 21.5% of CSP patients had entered the first stage of labor, which was 43.5% in non-CSP group (P < 0.05). Cephalopelvic disproportion occurred in 51.9% of CSP patients, which was significantly higher than that (23.2%) in non-CSP group (P < 0.01). 11.4% of CSP patients had undergone cesarean section due to breech and shoulder presentation in the past, which was only 1.4% in non-CSP group. However, no significance was noted (P > 0.05). We did not find significant differences between the CSP and non-CSP patients in maternal age, multiple cesarean sections, gestational age, emergency or elective caesarean section.; Conclusions: Multiple pregnancies, absence of the first stage of labor, and cephalopelvic disproportion might be the risk factors for the occurrence of CSP.