[Relationship between plasma motilin level and feeding intolerance in preterm infants]

To observe changes in plasma motilin (MOT) level among preterm infants after birth, to investigate the relationship between plasma motilin level and feeding intolerance (FI), and to clarify the possible risk factors.

A total of 112 preterm infants were divided into feeding tolerance (FT) group (n=59) and FI group (n=53). Their plasma MOT levels were measured by radioimmunoassay on days 1, 4, 7 and 14 of life. The clinical data of FI group were collected and subjected to multivariate logistic regression analysis.

Compared with the FT group, the FI group showed significantly lower plasma MOT levels on days 1, 4, 7 and 14 of life (P<0.05), and there was a positive correlation between plasma MOT level and gestational age, age in days, and volume of enteral feeding in the FI group. The lower the gestational age, the longer the FI duration. There was a negative correlation between the plasma MOT level on day 1 of life and the FI duration (r=-0.913, P<0.001). Gestational age and prenatal use of glucocorticoid were protective factors for FI, while fetal distress, placental abnormality and perinatal infection were risk factors for FI.

Change in plasma MOT level may be closely related to the development of FI in preterm infants. Early monitoring of plasma MOT level may be useful for predicting the occurrence of FI.