Role of vascular occlusion in the consequence of women
with pernicious placenta previa and prior cesarean section
Vascular occlusion has been applied to reduce bleeding during the
delivery (20–23) , which was verified in this study. Vascular occlusion
was applied to 106 pregnancies by either uterine artery embolization or
abdominal aorta balloon occlusion (blocking group). The other 641 cases
were assigned as unblocked group. The basic information of patients in
two groups was described in Table S2 and no significant difference was
observed between two groups. However, more suspected placenta
implantation was observed by ultrasound in the blocking group (26.4%)
than that in the non-blocking group (15.9%). The bleeding volume during
the delivery (600∼2500 vs . 500∼2000 ml, p=0.093) and the
incidence of postpartum hemorrhage (63/106 vs 354/641 cases,
p=0.419) were similar between blocking and non-blocking group.
Surprisingly, the hysterectomy rate in blocking group (25.4%, 27/106
cases) was much higher than that in non-blocking patients (7.9%, 51/641
cases) (p<0.001). The effect of vascular occlusion on the
fetal outcomes was also checked in this study. No differences were
detected between blocking and non-blocking group, including the
gestation terms of pregnancies and the Apgar score after birth (1 & 5
minutes) (Table S3).