Abstract: | Objective To explore the influence and relationship of prepregnancy weight and pregnancy weight gain on pregnancy complications and adverse pregnancy outcomes, and to provide the evidence for the pregnancy health care, reducing pregnancy complications and improving maternal and infant outcomes. Methods According to the retrospective study method, 603 singleton live pregnancies who were hospitalized and delivered in People’s Hospital of Xishuangbanna Dai Autonomous Prefecture with gestational diabetes mellitus (GDM), hypertension and other diseases and fetal macrosomia during January 2020 to January 2022 were collected. According to the prepregnancy body mass index (BMI) and gestational weight gain (GWG) criteria, they were divided into the low weight group (n = 31), normal weight group (n = 365), super weight group (n = 146), obesity group (n = 61), underweight gain group (n = 163), normal weight gain group (n = 230) and excessive weight gain group (n = 210): The pregnancy complications and adverse pregnancy outcomes, such as cesarean section rate, shoulder dystocia, birth rate of macrosomia, low birth weight infants, and admission rate to NICU were compared and analyzed. Results Prepregnancy maternal obesity was the influencing factor of preeclampsia. The incidence of preeclampsia, cesarean section, preterm delivery, low birth weight and NICU transfer increased with the increase of BMI before the pregnancy, and the difference was statistically significant (P < 0.05). The incidence of macrosomia, shoulder dystocia, preeclampsia and cesarean section increased with the increase of GWG, and the difference was statistically significant (P < 0.05). Conclusion High BMI before the pregnancy and excessive weight gain during the pregnancy can increase the incidence of pregnancy complications and lead to the increase in the incidence of adverse pregnancy outcomes. We should further strengthen the management and education of pregnant women’s weight during the pregnancy, and carry out whole-process intervention on weight during the pregnancy. |