Tehran University of Medical Sciences
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Davood Beiki

Predictors of abnormal renal cortical scintigraphy in children with first urinary tract infection: the importance of time factor


Authors: Ansari Gilani K, Modaresi Esfeh J, Gholamrezanezhad A, Gholami A, Mamishi S, Eftekhari M, Beiki D, Fard-Esfahani A, Fallahi B, Anvari A,
Int Urol Nephrol , Vol.42, No.4, 2009,Page:1041-1047

Introduction

We evaluated different factors predicting the development of acute pyelonephritis in Iranian children, with special attention to time factor.

Methods

One hundred nineteen patients (93 females and 26 males; age = 32.6 ± 30.8 months) with first urinary tract infection (UTI) were evaluated. None had previous urological problems. Prior to antibiotic therapy blood samples were gathered for laboratory evaluation. Vital signs on admission were measured. Clinical and laboratory indices, including therapeutic delay time (TDT) and therapeutic response time (TRT), were measured. Most patients were evaluated with renal ultrasound in the first three days following admission. All patients underwent dimercaptosuccinic acid (DMSA) renal scintigraphy and 71 were assessed for vesicoureteral reflux (VUR).

Results

DMSA scans were abnormal in 77 cases, of which 11 cases had bilateral renal involvement. Mean values for TDT, TRT, leukocyte count (LC), absolute neutrophil count (ANC), erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) were 74.1 h, 39.6 h, 15725 ± 6682 mm−3, 10772 ± 6458 mm−3, 51.9 ± 32.5 mm, and 27.3 ± 25.1 mg l−1, respectively. VUR was present in 29 of 142 evaluated renal units.

Conclusion

TDT ≥ 48