The impact of gestational sac size on the effectiveness and safety of high intensity focused ultrasound combined with ultrasound-guided suction curettage treatment for caesarean scar pregnancy

Abstract

Objective: To evaluate the correlation between the gestational sac size and the effect and safety of high intensity focused ultrasound (HIFU) combined with ultrasound-guided suction curettage for caesarean scar pregnancy (CSP). Methods: Seventy-six patients with CSP were enrolled. Based on their gestational sac size, patients were divided into three groups: Group 1 (n = 16, 10–20 mm), Group 2 (n = 28, 21–30 mm) and Group 3 (n = 32, >30 mm). All of them were treated by HIFU combined with ultrasound-guided suction curettage. Baseline characteristics, parameters and adverse events of HIFU, and intraoperative hemorrhage during ultrasound-guided suction curettage were recorded. Results: The median treatment time and average treatment intensity of HIFU in Group 3 were significantly higher than Group 1 (p .05). Conclusions: HIFU combined with ultrasound-guided suction curettage is a safe and effective clinical approach for CSP. Gestational sac size is a meaningful factor for predicting the efficacy and safety of HIFU treatment and hemorrhage during ultrasound-guided suction curettage.