胎儿宫内生长迟缓(IUGR)不是单纯指出生体重低,还应加上发育迟缓的病因、发病时期及胎儿的体型和状态.因此IUGR可分为胎儿营养不良和胎儿发育不全两大类.胎儿营养不良的IUGR常因妊娠后期母体或胎盘的病变(如妊毒症、糖尿病、甲状 Fetal growth retardation (IUGR) is not simply refers to low birth weight, should also be coupled with the cause of developmental delay, the onset of the fetus and body size and status, so IUGR can be divided into two major categories of fetal malnutrition and fetal hypoplasia. Malnourished IUGR often due to late pregnancy or maternal placental lesions (such as pregnancy-induced hepatitis, diabetes, thyroid