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Updated: Feb 12, 2026

Transurethral Induction of Mouse Urinary Tract Infection
Published on: August 5, 2010
Risks of irritable bowel syndrome in children with infantile urinary tract infection: a 13-year nationwide cohort
Teck-King Tan1, Miguel Saps2, Cheng-Li Lin3,4
1Department of Pediatrics, Children's Hospital, China Medical University Hospital, Taichung, Taiwan.
Insights
Infant urinary tract infections (UTI) increase the risk of developing childhood irritable bowel syndrome (IBS). This risk is higher with recurrent UTIs or when accompanied by vesicoureteral reflux (VUR).
Area of Science:
- Pediatric Gastroenterology
- Infectious Diseases
- Urology
Background:
- Early life events significantly influence the development of irritable bowel syndrome (IBS).
- Cross-organ sensitization between the bladder and colon is a suspected mechanism.
- The association between infant urinary tract infection (UTI) and childhood IBS is not well-established.
Purpose of the Study:
- To investigate whether infant urinary tract infection (UTI) is a risk factor for developing childhood irritable bowel syndrome (IBS).
- To quantify the risk of childhood IBS in infants with a history of UTI.
Main Methods:
- Retrospective cohort study involving 31,788 infants with UTI and 127,152 matched controls without UTI.
- Data collected between 2000 and 2011, with follow-up until the end of 2012.
- Incidence density and hazard ratios (HRs) for IBS were calculated and compared between cohorts.
Main Results:
- The incidence density of IBS was 1.52-fold higher in the UTI cohort compared to the non-UTI cohort.
- Higher risks of IBS were observed in children with more frequent UTI-related medical visits, longer hospitalizations, and concurrent vesicoureteral reflux (VUR).
- The hazard ratio for IBS was slightly higher in boys than in girls.
Conclusions:
- Infants with a history of UTI exhibit a significantly higher risk of developing childhood IBS.
- The risk of childhood IBS increases with the severity and recurrence of UTI, particularly when VUR is present.
- Findings highlight the importance of considering early-life UTIs in the context of pediatric functional gastrointestinal disorders.
Abstract:
Early life events play a crucial role in the development of irritable bowel syndrome (IBS). Some evidence suggests the phenomenon of cross-organ sensitization between bladder and colon. Whether urinary tract infection (UTI) during infancy is a risk factor of childhood IBS remains to be elucidated. In this retrospective cohort study, we selected 31 788 infants who had UTI between 2000 and 2011 as a UTI cohort and selected 127 152 infants without UTI as a comparison cohort, matched by age, sex and level of urbanization of living area. Incidence density and HRs with CIs of IBS between UTI and non-UTI cohorts were calculated by the end of 2012. The incidence density of IBS during the study period was 1.52-fold higher in the UTI cohort (95% CI 1.38 to 1.67) compared with the non-UTI cohort (2.05 vs 1.32 per 10 000 person-years). The HR of IBS was slightly higher for boys (1.53; 95% CI 1.34 to 1.73) than for girls (1.50; 95% CI 1.29 to 1.73). The HRs for IBS in children with UTI were greater for those with more UTI-related medical visits/per year (>5 visits, HR 61.3; 95% CI 51.8 to 72.6), with longer length of stay of hospitalization (>7 days, HR 1.75; 95% CI 1.36 to 2.24) and with vesicoureteral reflux (VUR) (HR 1.73; 95% CI 1.35 to 2.22) (p<0.0001, the trend test). Infants with UTI had higher risks of childhood IBS and the risks elevated further with recurrent UTI or UTI with concurrent VUR.
Related Concept Videos
Irritable Bowel Syndrome I: Introduction
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
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Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Irritable Bowel Syndrome III: Medical and Nursing Management
Urinary Tract Infection I: Introduction
Urinary Tract Infection II: Pathophysiology
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

