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J Pediatr Gastroenterol Nutr. 2005 Aug;41(2):221-4.

Breath hydrogen test after a bean meal demonstrates delayed oro-cecal transit time in children with chronic constipation.

Author information

1
Pediatric Gastroenterology Division and the Medical Imaging Department, Federal University of Sao Paulo, Sao Paulo, Brazil.

Abstract

OBJECTIVE:

To evaluate oro-cecal transit time in children with chronic constipation.

METHODS:

34 patients with chronic functional constipation age 3 to 13 years and 15 controls without constipation. Oro-cecal transit time was evaluated using the hydrogen breath test after ingestion of lactulose and after a standard meal of cooked beans. Total and segmental colonic transit times were measured with radiopaque markers.

RESULTS:

Of 34 patients with chronic constipation 61.8% had increased total colonic transit time (>62 hours). Oro-cecal transit time measured with lactulose as substrate was similar (p=0.727) in constipated patients with increased colonic transit time (63.8+/-16.3 minutes), in constipated patients with normal colonic transit time (66.9+/-22.9 minutes), and in controls (65.3+/-15.5 minutes). Using a test meal of beans, the hydrogen breath test showed that oro-cecal transit time of constipated patients with increased total colon transit time was higher (252.4+/-23.2 minutes) than oro-cecal transit time of constipated patients with normal colonic transit time (227.7+/-39.6 minutes) or controls (205.3+/-23.3 minutes) (p<.05).

CONCLUSION:

Hydrogen excretion in breath after a bean test meal showed delayed oro-cecal transit time in children with chronic constipation with abnormal total colonic transit time.

PMID:
16056103
[Indexed for MEDLINE]

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