Associations between the number of hysteroscopic surgeries and
the risk of adverse obstetric outcomes
To some extent, the number of hysteroscopic surgeries a woman underwent
reflected their severity of IUAs. We additionally examined the potential
impacts of the number of hysteroscopic surgeries on obstetrical
outcomes. Among the 780 women
with a history of HA-treated IUAs, 371, 315 and 94 underwent 1, 2 and ≥
3 hysteroscopic procedures before this pregnancy, respectively. There
were graded relationships between the number of hysteroscopic surgeries
and the risk of PE (Figure 2A ), placenta previa (Figure
2B ), placenta accreta spectrum (Figure 2C ), PPH
(Figure 2D ) and iatrogenic preterm birth (Figure 2H )
.The monotonic increases in RRs were observed with an increasing number
of hysteroscopic surgeries (p-value for trend <0.01). Additionally,
women who underwent more surgeries were more likely to receive o receive
hemostatic therapies (Figure 2E ) and cervical cerclage
(Figure 2F ).