Procalcitonin for the early prediction of renal parenchymal involvement in children with UTI: preliminary results

  • Aggeliki Kotoula
  • Stefanos Gardikis
  • Aggelos Tsalkidis
  • Elpis Mantadakis
  • Athanassios Zissimopoulos
  • Katerina Kambouri
  • Savvas Deftereos
  • Gregorios Tripsianis
  • Konstantinos Manolas
  • Athanassios Chatzimichael
  • George Vaos
Nephrology - Original Paper

Abstract

In order to establish the most reliable marker for distinguishing urinary tract infections (UTI) with and without renal parenchymal involvement (RPI), we recorded the clinical features and admission leukocyte count, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and serum procalcitonin (PCT) in 57 children (including 43 girls) aged 2–108 months admitted with a first episode of UTI. RPI was evaluated by Tc-99m dimercaptosuccinic acid (DMSA) scintigraphy within 7 days of admission. To establish cut-off points for ESR, CRP, and PCT, we used receiver operating characteristics curves and compared the area under the curve for ESR, CRP, and PCT. Twenty-seven children were diagnosed as having RPI based on positive renal scintigraphy. A body temperature of >38°C, a history of diarrhea, and poor oral intake were more common in patients with RPI. ESR, CRP, and PCT, but not leukocyte count, were significantly higher in patients with RPI (P < 0.001). PCT was more sensitive and specific for the diagnosis of upper versus lower UTI than ESR and CRP. Using a cut-off value of 0.85 ng/ml, PCT had the best performance, with sensitivity, specificity, and positive and negative predictive values of 89%, 97%, 96%, and 91% respectively. Serum PCT is a better marker than ESR, CRP, and leukocyte count for the early prediction of RPI in children with a first episode of UTI.

Keywords

Urinary tract infections Renal parenchymal involvement Procalcitonin C-reactive protein Children 

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Copyright information

© Springer Science+Business Media, B.V. 2008

Authors and Affiliations

  • Aggeliki Kotoula
    • 1
  • Stefanos Gardikis
    • 2
  • Aggelos Tsalkidis
    • 1
  • Elpis Mantadakis
    • 1
  • Athanassios Zissimopoulos
    • 3
  • Katerina Kambouri
    • 2
  • Savvas Deftereos
    • 4
  • Gregorios Tripsianis
    • 5
  • Konstantinos Manolas
    • 6
  • Athanassios Chatzimichael
    • 1
  • George Vaos
    • 2
  1. 1.Department of PediatricsAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece
  2. 2.Department of Pediatric SurgeryAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece
  3. 3.Department of Nuclear MedicineAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece
  4. 4.Department of RadiologyAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece
  5. 5.Department of Medical StatisticsAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece
  6. 6.Department of SurgeryAlexandroupolis University Hospital, Democritus University of Thrace School of MedicineAlexandroupolisGreece

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