Risk factors for small bowel bacterial overgrowth in cystic fibrosis

被引:80
作者
Fridge, Jacqueline L.
Conrad, Carol
Gerson, Lauren
Castillo, Ricardo O.
Cox, Kenneth
机构
[1] Childrens Hosp & Res Ctr Oakland, Div Gastroenterol, Oakland, CA 94609 USA
[2] Stanford Med Ctr, Lucile Packard Childrens Hosp, Div Pediat Gastroenterol Hepatol & Nutr, Palo Alto, CA USA
[3] Stanford Med Ctr, Lucile Packard Childrens Hosp, Div Pediat Pulm, Palo Alto, CA USA
[4] Stanford Med Ctr, Div Gastroenterol, Palo Alto, CA USA
关键词
cystic fibrosis; bacterial overgrowth syndrome; hydrogen breath test; pancreatic insufficiency;
D O I
10.1097/MPG.0b013e31802c0ceb
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Objectives: The purpose of this study was to determine the prevalence of small bowel bacterial overgrowth in patients with pancreatic-insufficient cystic fibrosis (CF) compared with age-matched controls and to identify potential risk factors for small bowel bacterial overgrowth. Patients and Methods: Fifty patients, 25 pancreatic-insufficient CF study patients (mean age, 17 y) and 25 gastrointestinal clinic control patients (mean age, 15 y), completed a glucose-hydrogen breath test after an overnight fast. Study patients completed a quality-of-life questionnaire modified from the Cystic Fibrosis Questionnaire. The medical history of each patient was compared with breath test results. A positive breath test was defined as a fasting hydrogen >= 15 ppm or a rise of >= 10ppm hydrogen over baseline during the test. Results: The prevalence of positive breath tests was higher in the CF study group (56%) than in the control group (20%) (P = 0.02). The mean fasting hydrogen levels of patients in the study and control groups were 22 and 5 ppm (P = 0.0001). The mean questionnaire scores were not significantly different between breath test-positive and -negative study patients. The use of azithromycin was associated with an increased risk of a positive breath test. Use of laxatives and inhaled ipratropium was associated with a decreased risk of a positive breath test. Conclusions: Patients with CF were more likely to have elevated fasting hydrogen levels compared with controls. This suggests a high prevalence of small bowel bacterial overgrowth in CF patients. Medications commonly used by CF patients may influence intestinal health.
引用
收藏
页码:212 / 218
页数:7
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