Risk factors for recurrent urolithiasis in children

Area of Science:

• Pediatric Nephrology
• Urolithiasis Research
• Clinical Epidemiology

Background:

• Recurrent kidney stones pose a significant health challenge in children.
• Identifying predictive factors for recurrence is crucial for effective management.
• Paediatric urolithiasis necessitates understanding long-term risk factors.

Purpose of the Study:

• To determine risk factors associated with recurrent kidney stones in a pediatric cohort.
• To analyze predictors of stone recurrence in children treated at a tertiary center.

Main Methods:

• Retrospective review of medical records of children with a first kidney stone episode (1998-2016).
• Analysis of patient characteristics, medical history, symptoms, laboratory results, and management.
• Application of univariate and backward conditional multivariate logistic regression models.

Main Results:

• A body mass index (BMI) above the 85th percentile was associated with a significantly lower risk of stone recurrence (multivariate analysis: 15-fold lower risk).
• Asymptomatic presentation of the initial stone episode correlated with a reduced risk of recurrence.
• Immobilization (10-fold higher risk) and the need for technical intervention (3.2-fold higher risk) were linked to increased stone recurrence.
• Univariate analysis indicated a 0.1 times lower risk for asymptomatic stones.

Conclusions:

• Higher BMI (>-85th percentile) and asymptomatic initial presentation are protective factors against pediatric kidney stone recurrence.
• Immobilized children and those requiring technical intervention for their first stone may need intensified follow-up.
• Findings suggest potential differences in metabolic profiles and highlight the importance of tailored follow-up strategies.