Text Box: ELECTROGASTROGRAPHY IN NEONATES RELATED TO POSTCONCEPTIONAL AGE Huang Li1, Aksel Lange2 1Dept. of Pediatrics, Qinghai Women’s and Children’s Hospital, China 2Department of Pediatrics, University of Aarhus, Aarhus, Denmark Background: Electrogastrography (EGG), a cutaneous recording of the myoelectrical activity of the stomach using surface electrodes, is attractive due to its noninvasive nature and its correlation with gastric motility. Thus, it is more significant in newborns. Only few data are available and the results are different. Aims: To investigate the relationship between gastric electrical activity (GEA) and postconceptional age (PCA) in healthy neonates. Methods: EGG was performed longitudinally weekly in 23 healthy preterm infants. Nineteen term infants were examined once. A total of 61 examinations were performed. Recordings were performed for atleast 60 minutes before, during, and 60 minutes after meal. Before analysis,we try to exclude noisy information.Spectral analysis methods were used in computing the parameters of the EGG. The EGG variables were Dominant Frequency (DF), percentage of DF in the normal range (2-4 CPM %), dominant frequency instability coefficient (DFIC) and post- to preprandial dominant power ratio (PR). Results: No development of the EGG variables was found with increasing postconceptional age. A significant postprandial decrease of 2-4 CPM% (P=0.032), and a tendency toward a postprandial decrease of DF (P=0.26) and dominant power (P=0.12), but an increase of DFIC (P= 0.28) compared with preprandial value was found in all periods. Conclusion: Examinations with EGG did not show the development of gastric electrical activity related to PCA. In contrast to other data we found no increase in postprandial DF, dominant power and 2-4 CPM %. A high percentage of normal slow waves in preterm infants with PCA below 35 weeks was found. Conflicting results still exist between examinations with EGG in neonates. 2307