临床表现为患儿胎粪排出延迟，顽固性便秘和腹胀，常并发小肠结肠炎、低位性肠梗阻，严重者危及患儿生命。
Delay to excrete meconium, refractory constipation and abdominal distension are commonly seen, also commonly accompanying with enterocolitis in small intestine and colon, lower intestine obstruction.
正常情况下，胎粪会在宝宝出生后第一次大便时排出。
Ordinarily, meconium is passed after birth as the baby's first stool.
宝宝出生后的最初两三天会排出胎粪。
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