3. By gestational age and birth weight Small for gestational age(SGA)小于胎龄儿 Bw<the 1oth percentiles Appropriate for gestational age(AGA)适于胎龄儿 the 10th percentiles <bw< the 90th percentiles Large for gestational age(LGA)大于胎龄儿 Bw>the 90th percentiles
3.By gestational age and birth weight Small for gestational age (SGA) 小于胎龄儿 BW < the 10th percentiles Appropriate for gestational age (AGA) 适于胎龄儿 the 10th percentiles <BW< the 90th percentiles Large for gestational age (LGA) 大于胎龄儿 BW > the 90th percentiles
Intrauterine growth curve 5000 第90百分位 4500 4250 4000 3750 平均体重 3500 3250 第10百分 3000 2750 2500 2000 1750 1500 1250 8 500 24262830323436384042444648(周)
Intrauterine Growth Curve 500 750 24 26 28 30 32 34 36 38 40 42 44 46 48 （周） 1000 1250 1500 1750 2000 2250 2750 3000 3500 3750 2500 4000 4250 4500 4750 5000 3250 小于胎龄 第10百分位 适于胎龄 平均体重 大于胎龄 第90百分位
3. By gestational age and birth weight Small for gestational age(SGA)小于胎龄儿 Bw<the 1oth percentiles Appropriate for gestational age(AGA)适于胎龄儿 the 10th percentiles <bw< the 90th percentiles Large for gestational age(LGA)大于胎龄儿 Bw>the 90th percentiles
3.By gestational age and birth weight Small for gestational age (SGA) 小于胎龄儿 BW < the 10th percentiles Appropriate for gestational age (AGA) 适于胎龄儿 the 10th percentiles <BW< the 90th percentiles Large for gestational age (LGA) 大于胎龄儿 BW > the 90th percentiles
4. By postnatal age Early newborn infant: in the first one of age Late newborn infant: between 2 and 4 weeks oi age 5. High risk newborn高危新生儿
4. By postnatal age • Early newborn infant: in the first one of age • Late newborn infant：between 2 and 4 weeks of age 5. High risk newborn 高危新生儿
Normal Newborn Infant 1. Physical appearance
Normal Newborn Infant 1. Physical appearance