Figure 5

Percent change of the area under the pressure curve in ileum, ICV and cecum during air insufflation into the cecum in normal subjects (negative lactulose breath tests) and in subjects with small bowel bacterial over growth (positive lactulose breath tests). The x axis shows the respective locations, and the y axis represents the percent change in pressure with respect to cecal pressures. Note that in subjects with small bowel bacterial overgrowth there is a common cavity effect during pressurization of the cecum representing the lack of ICV/cecal distention reflex.