Relationship between residual collateral vessels in preventive uterine arterial embolization and the risk of bleeding during the operation of curettage for cesarean scar pregnancy / 中华放射学杂志
To explore the relationship between residual collateral vessels in uterine arterial embolization (UAE) and the risk of bleeding during the operation of curettage for cesarean scarpregnancy.
According to angiogram acquired after UAE, collateral vessels were found in 53 patients, with 25 cases in grade A group, 15 cases in grade B group, and 13 cases in grade C group, respectively. Thirty-six patients underwent transcatheter embolization of collateral vessels. The incidence rate of minorhemorrhage in type B and C [60.0% (9/15), 46.2% (6/13)] was lower than that in control group (87.9%, 392/446), with significant difference found (χ2=9.972, P=0.002, χ2=19.090, P<0.001). Significant difference was found in the incidence rate of massive haemorrhage between group C (23.1%, 3/13) and control group (2.2%, 9/446) (χ2=14.480, P=0.001).
Conclusion:
As for cesarean scarpregnancy cases with uterine collateral vessels, embolization of collateral vessels may reduce the amounts of bleeding during curettage. Residual staining of middle and lower part of corpus uteri may be helpful in predicting the risk of massive haemorrhage during curettage.