Main finding
This study showed that there was higher incidence and risk of preterm birth, low birth weight, gestational hypertension, placenta previa, placenta abruption, and cesarean section in women who underwent non-obstetric abdominal surgery during pregnancy compared to pregnant women who did not undergo such surgery. However, when the laparoscopic surgery performed more than 6 months before delivery, there was no increased risk of obstetric and fetal complications including premature birth and LBW. Although there was no significant difference in most obstetric and fetal complications between laparotomy and laparoscopy group, the risk of LBW was significantly increased in the laparotomy group compared with laparoscopy group among the pregnant women who underwent ovarian resection.