Evaluation of Bilateral Internal Iliac Artery Balloon Occlusion in Placenta Accreta Spectrum Management

Placenta accreta spectrum (PAS) is abnormal placental adhesion beyond superficial myometrium, which includes placenta accreta, placenta increta, and placenta percreta. However, there is a desire to preserve the uterus and fertility, so alternatives to hysterectomy are needed. Presently, attempts to avoid hysterectomy include reducing intraoperative hemorrhage such as uterine compression sutures, intrauterine balloon tamponade, pelvic artery ligation, and spiral suturing of the lower uterine segment. Intrauterine balloon tamponade may increase CS scar dehiscence, uterine rupture, and infection. Combined with compression sutures, it may induce uterine necrosis. Placement of balloons in the bilateral internal iliac arteries before caesarean section can reduce uterine artery pressure and intraoperative blood loss during balloon inflation, thus temporarily blocking the main blood supply of the uterus, helping to expose the visual field, shortening the operation time during surgery, and leading to opportunities for timely adjustments to the operative plan during surgery.