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Repeatability of lactulose hydrogen breath test in subjects with normal or prolonged orocecal transit

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Abstract

The within-subject repeatability of orocecal transit assessed with lactulose hydrogen breath test was evaluated in 15 healthy volunteers and 16 constipated or obese patients. The test was repeated twice in each subject. Mean (sd) transit time was 105 (63) and 103 (60) min in the first and second series of tests, respectively, showing that the first measurement did not affect the second. The within-subject repeatability of the test was related to the length of transit, the scatter of the differences between the first and second test being greater with the increase of the mean gastrointestinal transit time. The 95% coefficient of repeatability was 84 min for all measurements and 30 and 118 min, respectively, for transit times under and over 100 min. The lowest reproducibility of the test was found in constipated patients with prolonged orocecal transit.

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Camboni, G., Basilisco, G., Bozzani, A. et al. Repeatability of lactulose hydrogen breath test in subjects with normal or prolonged orocecal transit. Digest Dis Sci 33, 1525–1527 (1988). https://doi.org/10.1007/BF01535941

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  • DOI: https://doi.org/10.1007/BF01535941

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