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An In Vitro Bladder Model of Catheter-Associated Urinary Tract Infection
Published on: June 24, 2025
Catheter-associated urinary tract infection and urinary tract abnormalities in young children: A retrospective study
Hiroyuki Oikawa1, Yuya Morooka2, Munehiro Furuichi1
1Department of Pediatrics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan, Tokyo, Japan.
Insights
Urinary tract abnormalities increase the risk of catheter-associated urinary tract infections (CAUTI) in young children. This study found that abnormal urogenital images significantly correlated with CAUTI development in pediatric intensive care unit patients.
Area of Science:
- Pediatric critical care medicine
- Infectious disease epidemiology
- Urology
Background:
- Catheter-associated urinary tract infections (CAUTI) are a significant concern in pediatric intensive care units (PICU) and high care units (HCU).
- Limited research exists on the contribution of underlying urinary tract abnormalities to CAUTI development in young children.
- This study addresses the knowledge gap by investigating the association between CAUTI and urogenital abnormalities.
Purpose of the Study:
- To determine if urinary tract abnormalities are associated with an increased risk of developing CAUTI in children under six years old.
- To identify risk factors contributing to CAUTI in hospitalized pediatric patients.
Main Methods:
- Retrospective analysis of pediatric patients (<6 years) with CAUTI admitted to PICU/HCU between April 2018 and July 2022.
- Abdominal imaging studies were performed on all CAUTI patients.
- Propensity score matching and multivariable logistic regression were used to compare cases and controls and analyze risk factors.
Main Results:
- Abnormal urogenital images were significantly associated with CAUTI development (OR 5.30 before matching, OR 3.44 after matching).
- Prolonged catheterization (>10 days) was also a significant risk factor for CAUTI (OR 2.76 before matching, OR 3.44 after matching).
- CAUTI in young children in PICU/HCU showed a significant association with urinary tract imaging abnormalities.
Conclusions:
- Urinary tract malformations, in addition to catheter presence, are implicated in the development of CAUTI in young children.
- Early identification of urinary tract abnormalities may be crucial for CAUTI prevention strategies in pediatric critical care settings.
Introduction:
Studies investigating the role of urinary tract abnormalities in the development of catheter-associated urinary tract infections (CAUTI) in young children are limited. Thus, in the present study, we aimed to determine whether there is an association between CAUTI and urinary tract abnormalities.
Methods:
We performed abdominal imaging studies on all patients aged <6 years with CAUTI admitted to the pediatric intensive care units (PICU) and high care unit (HCU) at Keio university or Fukuoka Children's Hospital from April 1, 2018 to July 31, 2022. Among 40 children who developed CAUTI, 13 (33 %) had abnormal urogenital images. Further, two case-control studies were conducted before and after propensity score matching, and the groups were compared using multivariable logistic regression models to analyze the effects of various factors on CAUTI development.
Results:
In the multivariate logistic regression models, abnormal urogenital images (OR 5.30 [95 % CI, 2.40-11.7] and OR 3.44 [95 % CI, 1.16-9.93]) and duration of catheterization >10 days (OR 2.76 [95 % CI, 1.28-5.96] and OR 3.44 [95 % CI, 1.16-9.93]) were found to be significantly associated with development of CAUTI, both before (39 cases, 459 controls) and after propensity score matching (36 cases, 72 controls). Further, CAUTI in young children in the PICU or HCU was significantly associated with imaging abnormalities of the urinary tract.
Conclusions:
These results suggest that not only the presence of catheters, but also urinary tract malformations may contribute to the development of CAUTI in young children.
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