Long-term Observation of Functional Structural Changes in Children with Vesicoureteric Reflux

Czech version

Authors: T. Baltesová ¹; Ľ. Podracká ¹; E. Sádová ¹; K. Trejbalová ¹; Z. Kurcinová ²; J. Takács ³; M. Verebová ⁴
Authors‘ workplace: I. Klinika detí a dorastu LF UPJŠ a DFN, Košice prednostka prof. MUDr. Ľ. Podracká, CSc. ¹; Urologická klinika, Fakultná nemocnica L. Pasteura, Košice prednosta doc. MUDr. L. Valanský, CSc. ²; Inštitút nukleárnej a molekulárnej medicíny, Košice riaditeľ MUDr. I. Marin ³; I. Klinika rádiológie a zobrazovacích metód, Fakultná nemocnica L. Pasteura, Košice prednosta MUDr. P. Mach, CSc. ⁴
Published in: Čes-slov Pediat 2006; 61 (10): 566-572.
Category: Original Papers

Overview

Aim:
To evaluate glomerular filtration rate (GFR) and structural changes in children with primary vesicoureteric reflux (VUR) in relation to the duration of follow-up period.

Patients and methods:
GFR was calculated according to Schwartz formula in 53 patients (20 boys), mean age 9.5 ± 5.7 yr. with grade III. to V. VUR (28 bilateral). The change in GFR (ΔGFR) was expressed as percentage of baseline GFR. Kidney size was determined by ultrasonography and renal scars were detected by DMSA scan. 27 patients were treated surgically, 15 were managed conservatively a 11 received combined treatment (surgery and antimicrobial prophylaxis).

Results:
2-year follow-up was completed in 53 patients, 5-year in 41 and 10-year outcomes were available in 15 patients. GFR was below physiological range in 2 children at the time of diagnosis, at 2 years GFR decreased in 5 patients (9.4%). The decline of GFR was present in 18 children (43.9%) after 5 years and in 9 (60%) after 10 years of follow-up with mean ΔGFR -12.2% and -18.1%. GFR

Conclusion:
Negative functional changes of kidneys are related to the time of follow-up. Structural changes of renal parenchyma depend on initial parenchymal injury and frequency of acute pyelonephritis.

Key words:
vesicoureteric reflux, renal functions, children