Chih T W, Teng R J, Wang C S, Tsou Yau K I
Department of Pediatrics, National Taiwan University Hospital, Taipei, R.O.C.
Zhonghua Min Guo Xiao Er Ke Yi Xue Hui Za Zhi. 1991 Jan-Feb;32(1):17-23.
A total of 1,000 consecutive newborns were studied for the time of passage of the first urine and the first stool. Delayed passage (greater than 24 hours) of the first urine was noted in 4% of 920 adequate birth weight infants (birth weight greater than 2,500 grams) and 3.8% of 80 low birth weight infants (birth weight less than or equal to 2,500 grams). Whereas, delayed passage of the first stool was noted in 2.0% of adequate birth weight infants and 11.3% of low birth weight infants. By the age of 48 hours, all infants had passed their first urine, while, 99.9% of adequate birth weight infants and 97.5% of low birth weight infants had passed their first stool. There was significant difference in the gestational age, birth weight, presence of respiratory distress syndrome and delay in the first enteral feeding between the delayed and nondelayed stool passage groups.
对总共1000例连续出生的新生儿进行了首次排尿和首次排便时间的研究。在920例出生体重正常的婴儿（出生体重超过2500克）中，4%出现首次排尿延迟（超过24小时）；在80例低出生体重婴儿（出生体重小于或等于2500克）中，3.8%出现首次排尿延迟。而出生体重正常的婴儿中2.0%出现首次排便延迟，低出生体重婴儿中11.3%出现首次排便延迟。到48小时时，所有婴儿都已排出首次尿液，而出生体重正常的婴儿中有99.9%、低出生体重婴儿中有97.5%已排出首次粪便。首次排便延迟组和未延迟组在胎龄、出生体重、呼吸窘迫综合征的存在情况以及首次肠内喂养延迟方面存在显著差异。
