胎儿宫内发育迟缓(IUGR)使围生儿患病率和病死率显著增高,影响其儿童期与青春期的智力及体格发育,因此,预防和减少IUGR的发生对改善围生儿预后,提高人口素质具有重要意义。IUGR的病因复杂,其发病机制除胎儿畸形外,多与母体氧和营养 Fetal intrauterine growth retardation (IUGR) makes the perinatal morbidity and mortality significantly increased, affecting their childhood and adolescent intelligence and physical development, therefore, to prevent and reduce the incidence of IUGR to improve perinatal prognosis and increase population Quality is of great importance. The etiology of IUGR is complex, its pathogenesis in addition to fetal malformations, more with maternal oxygen and nutrition