胎儿宫内发育迟缓(IUGR),通常指37周后,胎儿出生体重小于2500g,其死亡率为正常儿的 4～6倍,儿童期及青春期的体能与智力发育,也将受到影响。胎儿宫内发育迟缓病因多而复杂,最常见的有:1、遗传因素:胎儿遗传性疾病,21、18或13三体综合征、Turner综合征;2、营养因素:由于孕妇偏食或妊娠剧吐致使摄入蛋白质及维生素不足;3、妊娠病理:妊娠高血压综 Fetal intrauterine growth retardation (IUGR), usually after 37 weeks, birth weight less than 2500g, the mortality rate of normal children 4 to 6 times, childhood and adolescence physical and mental development will also be affected. Fetal intrauterine growth retardation causes more and more complex, the most common are: 1, genetic factors: fetal genetic disease, trisomy 21, 18 or 13, Turner syndrome; 2, nutritional factors: due to partial eclipse of pregnancy or pregnancy Vomiting lead to inadequate intake of protein and vitamins; 3, pregnancy pathology: pregnancy-induced hypertension