Artículos de revistas
Effects of meal size and proximal-distal segmentation on gastric activity
Fecha
2010-12-14Registro en:
World Journal of Gastroenterology. Beijing: Baishideng Publ Grp Co Ltd, v. 16, n. 46, p. 5861-5868, 2010.
1007-9327
10.3748/wjg.v16.i46.5861
WOS:000285448500011
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal de Mato Grosso (UFMT)
Universidade Estadual de Ciências da Saúde de Alagoas (UNCISAL)
Universidade de São Paulo (USP)
Institución
Resumen
AIM: To evaluate the effects of meal size and three segmentations on intragastric distribution of the meal and gastric motility, by scintigraphy.METHODS: Twelve healthy volunteers were randomly assessed, twice, by scintigraphy. The test meal consisted of 60 or 180 mL of yogurt labeled with 64 MBq (99m)Tc-tin colloid. Anterior and posterior dynamic frames were simultaneously acquired for 18 min and all data were analyzed in MatLab. Three proximal-distal segmentations using regions of interest were adopted for both meals.RESULTS: Intragastric distribution of the meal between the proximal and distal compartments was strongly influenced by the way in which the stomach was divided, showing greater proximal retention after the 180 mL. An important finding was that both dominant frequencies (1 and 3 cpm) were simultaneously recorded in the proximal and distal stomach; however, the power ratio of those dominant frequencies varied in agreement with the segmentation adopted and was independent of the meal size.CONCLUSION: It was possible to simultaneously evaluate the static intragastric distribution and phasic contractility from the same recording using our scintigraphic approach. (C) 2010 Baishideng. All rights reserved.