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临床检测100例足月新生儿尿NAG（N-乙酰-β-D-氨基葡萄糖耷酶）的活性。分为两组，生后1分钟Apgar评分≤7分的50例为窒息组；评分≥8分钟的50例为正常新生儿对照组。窒息组中又根据APgar评分分为轻度窒息与重度窒息进行比较。取生后第2或第3天的一次尿液送检。以CNP－NAG为底物
The activity of urine NAG (N-acetyl-β-D-glucosaminide) in 100 full-term neonates was detected clinically. Divided into two groups, one minute after birth Apgar score ≤ 7 points for the 50 cases of asphyxia group; score ≥ 8 minutes for the 50 cases of normal neonatal control group. According to the APgar score, the asphyxia group was divided into mild asphyxia and severe asphyxia. After the second or third days after taking a urine test. CNP-NAG as substrate