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Abstract Objective: To analyze the characteristics of blood flow parameters of uterus of women with cesarean scar pregnancy (CSP) by color Doppler ultrasound. Methods: From January 2017 to December 2018, 148 pregnant women with history cesarean section were enrolled, and were divided into group A (38 women with CSP) and group B (110 women without CSP), and another 40 healthy pregnant women without history cesarean section were selected in group C. The pulsatile index (PI), the resistance index (RI), the systolic peak flow rate/diastolic flow rate (S/D value) of the uterine artery (UtA) of all included women were measured by color Doppler ultrasound. Results: The UtA-S/D, UtA-RI, and the myometrial thickness of anterior segment of uterus (MTASU) of women in group A were significant lower than those of women in group B and group C (P<0.05). After treatment, the UtA-S/D, UtA-RI, and MTASU of women in the three groups had significantly increased (P<0.05), and the length of the echo mass of women was significantly reduced (P<0.05). The UtA-RI, UtA-S/D and MTASU of women in group B and group C had decreased gradually with the gestational weeks of women prolonged. The UtA-RI, UtA-S/D and MTASU of women in group B was significant lower than those of women in group C (P<0.05). Conclusion: UtA blood flow parameters of pregnant women with history cesarean are obviously abnormal, and their MTASU become thinner, especially for women with CSP. The color Doppler ultrasound for differential diagnosing women with CSP has some value.
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