Objective: To assess whether prophylactic intraoperative abdominal aortic balloon occlusion (IAABO) is indeed beneficial in pregnancies with placenta previa (PP) and placenta accreta spectrum (PAS) during cesarean section.
Methods: A retrospective case-control study included 251 pregnancies with PP and/or PAS. All enrolled patients were divided into a PP/PAS group, a PP + PAS group, and an IAABO group. The demographic characteristics and maternal and neonatal outcomes were compared.
Results: There was no significant difference in blood loss and transfusion between the IAABO group and the PP + PAS group (P > 0.05). However, blood loss and red blood cell and fresh frozen plasma transfusion in the above two groups were significantly higher than in the PP/PAS group (P < 0.05). More pregnancies in the IAABO group had to undergo uterine artery embolization (29.2%) or hysterectomy (20.8%), and this percentage was significantly higher than that in the other two groups (P < 0.001). All neonatal characteristics did not show differences between the IAABO group and PP + PAS group (P > 0.05). IAABO led to femoral artery thrombosis in three cases and minor postoperative renal injury in one case.
Conclusion: IAABO only acted as a less important supporting technique during cesarean section. There was no evidence suggesting that IAABO could significantly control the massive hemorrhage in pregnancies with PP and PAS during cesarean delivery.
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