关键词: 超声, 剖宫产切口部妊娠, 术中出血量, 危险因素

Abstract: To explore the risk factors affecting intraoperative bleeding volume in cesarean scar pregnancy (CSP) after cesarean section, and to search for clinical and ultrasound indicators that can predict intraoperative bleeding volume in CSP. A retrospective study was conducted to analyze the clinical and ultrasound data of 133 patients with CSP, and the patients were divided into group A (bleeding volume<100 mL) and group B (bleeding volume ≥ 100 mL) based on whether the intraoperative bleeding volume was more than 100 mL. Logistic regression model was used to analyze the risk factors related to intraoperative bleeding volume in patients. Logistic regression model screened the maximum diameter of gestational sac and the residual myometrial thickness as independent risk factors for predicting intraoperative bleeding volume, with cutoff values of 32.5 mm and 2.45 mm, respectively. In this study, we concluded that residual myometrial thickness and the maximum diameter of gestational sac are independent risk factors for predicting intraoperative bleeding volume during CSP.

Key words: ultrasonography, cesarean scar pregnancy, intraoperative bleeding volume, risk factors