Methods The levels of gastin,motilin and vasoactive intestinal polypoptide of 31 TPN and 33 PPN preterm infants were measured by RIA at ages of 1,3,7, and 10 days.

• 方法对31例全静脉内营养和33例部分肠道内喂养的早产儿，分别在生后的第1、3、7、10天进行血清胃泌素、胃动素、血管活性肽水平的测定。