The effectiveness of single ultrasound-guided high-intensity focused ultrasound (USgHIFU) ablation in managing placenta accreta spectrum (PAS) disorder.

OBJECTIVE: To evaluate the feasibility and effectiveness of single ultrasound-guided high-intensity focused ultrasound (USgHIFU) ablation in managing placenta accreta spectrum (PAS) disorder. MATERIALS AND METHODS: We retrospectively analyzed 40 PAS patients between April 2017 and October 2021. All the patients received one session of HIFU treatment. Regular follow-up was done after HIFU treatment until normal menstruation returned and placental tissue disappeared. The patient's reproductive-related outcomes were obtained through telephone interviews. RESULTS: The median follow-up time for the 40 patients was 30.50 (15.75-44.00) months and the mean placental tissue elimination time was 45.29 ± 33.32 days. The mean duration of bloody lochia was 13.43 ± 10.01 days, with no incidences of severe bleeding. Notably, Linear regression analysis showed that the residual placenta volume before HIFU was a factor affecting the duration of bloody lochia after HIFU (R2 = 0.284, B = 0.062, P = 0.000). The normal menstrual return time was 58.71 ± 31.14 days. One (2.50%) patient developed an infection. Two (5.00%) patients were subjected to ultrasound-guided suction curettage for persistent vaginal discharge for more than one month without infection. Notably, 7 of the 18 patients who expressed reproductive plans became pregnant during the 4 to 53 months of follow-up without placental abnormalities. The remaining 11 patients were on contraceptives. CONCLUSIONS: Single HIFU is an effective treatment option for managing PAS. However, future studies on further treatment strategies to reduce complications and promote patient recovery after HIFU ablation are desirable.

Focused Ultrasound Ablation Surgery combined with ultrasound-guided suction curettage in the treatment and management of Cesarean Scar Pregnancy.

OBJECTIVE: To evaluate the feasibility, safety, and effectiveness of Focused Ultrasound Ablation Surgery (FUAS) combined with ultrasound-guided suction curettage in the management of Cesarean Scar Pregnancy (CSP). STUDY DESIGN: We retrospectively analyzed 52 patients with CSP from April, 2017, to December, 2019. All the patients received one session of FUAS, and suction curettage under ultrasound guidance was performed 1-3 days after FUAS. The intraoperative blood loss in suction curettage, duration of vaginal bleeding after curettage, reproductive outcomes, and adverse effects were recorded and analyzed. RESULTS: All the 52 patients completed one session of FUAS combined with suction curettage without serious adverse effects. The mean intraoperative blood loss was 32.81 ± 53.83 mL. 47 (90.38 %) patients had a successful suction curettage with a blood loss of less than 80 mL. 5 (9.62 %) patients had an active bleeding of ≥80 mL; however, the bleeding was stopped effectively by Foley's urinary catheter and no evident bleeding presented when the catheter was removed 24 h later. The mean duration of vaginal bleeding was 7.88 ± 4.24 days. 48 (92.30 %) patients recovered with little vaginal bleeding after curettage. 4 (7.69 %) type III CSP patients experienced late-onset severe bleeding and required UAE or surgery. During 6-36 months of the follow-up period, 12 patients expressed reproductive plan, in which 4 patients delivered by cesarean section, 3 patients had an ongoing pregnancy and 1 patient had an abortion in the early pregnancy. CONCLUSIONS: FUAS combined with ultrasound-guided suction curettage is a safe and effective treatment strategy in the management of CSP type I and CSP type II and is particularly advantageous for CSP patients with reproductive requirements. However, further studies are warranted to determine the meticulous inclusion criteria for patients with type III CSP.