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Clinical Trial
. 2003 Jul;52(7):971-4.
doi: 10.1136/gut.52.7.971.

Influence of body posture on intestinal transit of gas

R Dainese  1 , J Serra, F Azpiroz, J-R Malagelada
Affiliations
Clinical Trial

Influence of body posture on intestinal transit of gas

R Dainese et al. Gut. 2003 Jul.

Abstract

Background: Patients describe that body posture may affect their abdominal bloating, distension, and flatulence, but whether changes in position have objectively demonstrable effects, either beneficial or deleterious, has not been investigated.

Aim: To determine the effect of body posture, upright versus supine, on intestinal transit of gas loads.

Subjects: Eight healthy subjects without gastrointestinal symptoms.

Methods: In each subject a gas mixture was continuously infused into the jejunum (12 ml/min) for three hours, and gas evacuation, clearance of a non- absorbable gaseous marker, perception, and abdominal girth were measured. Paired studies were randomly performed in each subject on separate days in the upright and supine positions.

Results: In the upright position, intestinal gas retention was much smaller than when supine (13 (52) ml v 146 (75) ml retention at 60 minutes, respectively; p<0.05), and clearance of the gas marker was expedited (72 (10)% clearance v 49 (16)% at 60 minutes, respectively; p<0.05). The gas challenge test was well tolerated both in the upright and supine positions without abdominal distension.

Conclusion: Body posture has a significant influence on intestinal gas propulsion: transit is faster in the upright position than when supine.

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Figures

Figure 1
Figure 1
Effect of body position on gas transit. Gas retention measured as gas infused minus evacuated over 180 minutes of jejunal gas infusion. During the first 60 minute period, infused gas was retained in the supine but not in the upright position (*p<0.05).
Figure 2
Figure 2
Effect of body position on gas clearance. Clearance of a sulphurhexafluoride (SF6) jejunal bolus was significantly faster in the upright than in the supine position (*p<0.05 at 60 minutes) but by 180 minutes marker recovery was complete.
Figure 3
Figure 3
Effect of body position on abdominal perception. Perception during jejunal gas infusion was scored from 0 to 6 (only 0–3 score scale shown). Gas infusion was equally well tolerated both in the upright and supine positions (NS).
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References

    1. Thompson WG, Longstreth G, Drossman DA, et al. Functional bowel disorders and D. Functional abdominal pain. In: Drossman DA, Corazziari E, Talley NJ, et al, eds. The Functional Gastrointestinal Disorders. McLean, VA: Degnon Associates, 2000:351–432.
    1. Serra J, Azpiroz F, Malagelada JR. Intestinal gas dynamics and tolerance in humans. Gastroenterology 1998;115:542–50. - PubMed
    1. Foster RE. Physiological basis of gas exchange in the gut. Ann N Y Acad Sci 1968;150:4–12. - PubMed
    1. Pogrund RS, Steggerda FR. Influence of gaseous transfer between the colon and blood stream on percentage gas compositions of intestinal flatus in man. Am J Physiol 1948;153:475–82. - PubMed
    1. Levitt MD. Production and excretion of hydrogen gas in man. N Engl J Med 1969;281:122–7. - PubMed

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