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收集1984～1992年8年间14453例孕妇,取胎儿脐带钳夹部的脐动、静脉血作血气和酸碱分析。59例(0.4％)足月儿有代谢性酸中毒(简称代酸)组(脐A缓冲碱<30mmol/L)。另51例无代酸但有严重呼吸性酸中毒(简称呼酸)组(脐A CO_2张力>75torr)。以产时无呼酸和代酸的59例足月儿(脐A CO_2张力<65torr,脐A缓冲碱>38mmol/L)为对照组。对照组和代酸组按孕龄(±1周)和出生体重(±100g)配对。产科发生的情况包括:①孕妇的内科和产科合并症;②胎儿窘迫(羊水胎粪污染或异常胎心率);③产程及分娩情况;④1分钟和5分钟Apgar评分需作新生儿复苏;⑤出生体重和胎儿生长迟缓(出生体重<
14453 pregnant women were collected from 1984 to 1992 in 8 years. Umbilical artery and venous blood of the umbilical cord clamp were collected for blood gas and acid-base analysis. 59 (0.4%) term infants had metabolic acidosis (abbreviated as acid) group (navel A buffer base <30mmol / L). The other 51 cases of acid-free but with severe respiratory acidosis (referred to as ache) group (navel A CO_2 tension> 75torr). Fifty-nine full-term infants (umbilical A CO_2 tension <65torr, umbilical A-buffer base> 38mmol / L) without acid and acid were used as the control group. The control and acidogenic groups were paired with gestational age (± 1 week) and birth weight (± 100g). Obstetric conditions include: ① pregnant women with medical and obstetric complications; ② fetal distress (amniotic fluid meconium contamination or abnormal fetal heart rate); ③ labor and delivery conditions; ④ 1 minute and 5 minutes Apgar score required for neonatal resuscitation; ⑤ Birth weight and fetal growth retardation (birth weight <