36 Comparison of electrogastrogram utilizing a solid meal vs. water loading in healthy children and adolescents

Abstract

The aim of this study was to evaluate the differential effects of a solid meal and water loading (WL) on the electrogastrogram (EGG) in healthy children and adolescents.Methods: Twenty‐six healthy participants (13 F; mean age 12.5 years, range: 8–17) underwent two separate EGG recordings performed in a standard fashion on two separate days. With the first session, EGG was recorded for 30 min in the fasting state and for 60 min following a solid test meal (2 eggs, toast, and water). The procedure for the second session was the same as for the first session except that the meal was replaced by WL. Spectral analysis was performed to compute EGG parameters and their postprandial changes. Data are presented as mean + SD.Results: The solid meal was associated with an increase in the EGG dominant frequency (DF) (2.91 ± 0.45 cpm vs. 3.14 ± 0.37 cpm, p = 0.02), %normal slow waves (82.04 ± 11.31% vs. 89.85 ± 10.5%, p = 0.008), and the dominant power (DP) (47.40 ± 4.03 dB vs. 54.09 ± 8.07 dB, p < 0.001) from the pre‐ to the postprandial periods. With WL, only the DP significantly increased postprandially (45.71 ± 4.20 dB vs. 51.12 ± 6.78 dB, p < 0.001). WL was associated with a lower postprandial DF than the solid meal (2.80 ± 0.34 cpm vs. 3.14 ± 0.37 cpm, p = 0.001). The postprandial DP change following the meal was positively correlated with the change following WL (r = 0.523, p = 0.006).Conclusion: The postprandial EGG differs depending on the nutritional constituency or consistency of the meal.