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Predisposing factors for renal scarring in children with urinary tract infection

Fatemeh Beiraghdar1, Yunes Panahi, Behzad Einollahi

  • 1Nephronology and Urology Research Center, Baqiyatallah Medical Science, Tehran, Islamic Republc of Iran.

Saudi Journal of Kidney Diseases and Transplantation : an Official Publication of the Saudi Center for Organ Transplantation, Saudi Arabia
|May 10, 2012
PubMed

Insights

Young children with urinary tract infections (UTIs) face a higher risk of renal scarring, especially those with recurrent infections. Early detection and management are crucial for preventing kidney damage in pediatric patients.

Area of Science:

  • Pediatric Nephrology
  • Medical Imaging in Urology
  • Infectious Diseases in Children

Background:

  • Urinary tract infections (UTIs) are common in children and can lead to significant kidney damage.
  • Renal scarring, a consequence of UTIs, can impair kidney function and lead to long-term complications.
  • Identifying predisposing factors for renal scarring is crucial for timely intervention and prevention strategies.

Purpose of the Study:

  • To determine the predisposing factors associated with renal scarring in pediatric patients diagnosed with urinary tract infections (UTIs).
  • To analyze the incidence of renal scarring and vesicoureteral reflux (VUR) across different pediatric age groups.
  • To investigate the co-occurrence of pseudohypoaldosteronism (PHA) in children with UTIs and renal scarring.

Main Methods:

  • A prospective cohort study involving 176 children with documented urinary tract infections (UTIs).
  • Children were categorized into four age groups: ≤1 year, 1-2 years, 2-7 years, and 7-14 years.
  • Diagnostic tools included ultrasonography and Technetium-99 m-DMSA scans to assess renal abnormalities and scarring.

Main Results:

  • Infants under 12 months had the highest incidence of renal scarring (52.9%), with vesicoureteral reflux (VUR) diagnosed in 56.8%.
  • Renal scarring was observed in 41.67% of children aged 1-2 years, 36.3% in the 2-7 years group, and 41.6% in the 7-14 years group.
  • A notable finding was the high incidence of pseudohypoaldosteronism (PHA) in younger children (39.2% in the ≤1 year group).

Conclusions:

  • Younger age and recurrent urinary tract infections (UTIs) are significant risk factors for renal scarring in children.
  • Vesicoureteral reflux (VUR) is frequently associated with UTIs and renal scarring across pediatric age groups.
  • The study highlights the importance of early diagnosis and management of UTIs in children to prevent long-term renal damage.

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