Ajayi O, Srinivasan G, Oak A, Pildes R S
Division of Neonatology, Cook County Hospital, Chicago Medical School, Illinois 60612.
Indian Pediatr. 1993 Jan;30(1):31-6.
The onset of stool passage, timing of transition to yellow stools and the pattern of stooling frequency over the first 4 weeks were studied in infants < 1500 g at birth. The time of passage of the first stool (median, 19) correlated with birth weight and gestational age but not with presence or severity of respiratory distress; fourteen percent passed stool after 1st 48 hours. Transition to yellow occurred at 17.6 +/- 6.4 days and was related to the onset of feeding and birth weight. Stooling frequency was similar in Wk 2 as Wk 1, increased in Wk 3 and plateaued on Wk 4. Volume of feeding/day increased each week over that of preceding week but stooling frequency was not related to the increased volume or any of the other variables.
对出生时体重<1500克的婴儿，研究了首次排便时间、转变为黄色粪便的时间以及头4周的排便频率模式。首次排便时间（中位数为19小时）与出生体重和胎龄相关，但与呼吸窘迫的存在或严重程度无关；14%的婴儿在出生后48小时后排便。转变为黄色粪便发生在17.6±6.4天，与开始喂养和出生体重有关。第2周的排便频率与第1周相似，第3周增加，第4周趋于平稳。每天的喂养量每周都比前一周增加，但排便频率与喂养量的增加或任何其他变量无关。
