1. Origin of gas retention and symptoms in patients with bloating
Beatrice Salvioli, Jordi Serra, Fernando Azpiroz, Carlos Lorenzo, Santiago Aguade, Joan Castell, Juan-R. Malagelada 
Gastroenterology 
Volume 128, Issue 3, Pages (March 2005)
DOI: /j.gastro
Copyright © 2005 American Gastroenterological Association Terms and Conditions

2. Figure 1
Intestinal gas clearance of radiolabeled gas infused into the jejunum. Gas clearance was significantly impaired in patients with abdominal bloating (n = 12) as compared with healthy subjects (n = 10). *P < .05 vs healthy subjects.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2005 American Gastroenterological Association Terms and Conditions

3. Figure 2
Small bowel and colonic transit times. Data are individual (and means ± SE) half clearance times. As compared with healthy subjects, delayed gas clearance in patients was related to prolonged small bowel transit times. *P < .05 vs healthy subjects.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2005 American Gastroenterological Association Terms and Conditions

4. Figure 3
Examples of gut scintigraphy 15 minutes after 133Xe bolus administration. Note delayed transit with small bowel distribution of marker in the patient as compared with intracolonic distribution in the healthy subject.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2005 American Gastroenterological Association Terms and Conditions

5. Figure 4
Response to proximal and distal gas infusion. As compared with healthy subjects, patients developed significant gas retention during jejunal (n = 12; *P < .05 vs healthy subjects) but not during ileal or cecal gas infusion (n = 6 each; #P < .05 vs jejunal infusion for both).
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2005 American Gastroenterological Association Terms and Conditions