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分娩时胎粪污染羊水率约为1/10,当分娩或出生时吸入可导致1～2%的新生儿呼吸窘迫。胎粪吸入
The rate of meconium-stained amniotic fluid during childbirth is about 1/10. Inhalation during childbirth or birth can result in 1 to 2% of neonatal respiratory distress. Meconium inhalation