When is the best time for voiding cystourethrogram in urinary tract infection of children?

Area of Science:

• Pediatric Nephrology
• Urology
• Diagnostic Imaging

Background:

• Urinary tract infections (UTIs) are common in children.
• Vesicoureteral reflux (VUR) is a significant risk factor for recurrent UTIs and renal scarring.
• The optimal timing for performing a voiding cystourethrogram (VCUG) after a UTI to assess for VUR remains debated.

Purpose of the Study:

• To determine if the interval between a UTI and VCUG affects the prevalence or severity of VUR in children.
• To provide evidence-based recommendations for VCUG timing in pediatric UTI management.

Main Methods:

• A cohort of 161 children with a first-time UTI were evaluated.
• Patients were divided into two groups based on VCUG timing: early (within 7 days of treatment) and late (2 weeks or later).
• Prevalence and severity of VUR were compared between the early and late VCUG groups.

Main Results:

• The prevalence of VUR was 25.3% in the early group and 30.2% in the late group.
• No statistically significant difference in VUR prevalence (P=0.598) or severity (P=0.379) was found between the two groups.
• The timing of VCUG did not influence the detection or grading of VUR.

Conclusions:

• The interval between a UTI and VCUG performance does not affect the diagnosis or severity of VUR in children.
• VCUG can be performed as soon as possible after a negative urine culture in children with UTIs.
• This finding simplifies diagnostic protocols and potentially reduces patient anxiety and healthcare costs.