Status of renal hemodynamics in children with urilithiasis complicated by chronic kidney disease

The objective of the paper is to examine the status of renal hemodynamics in children with urolithiasis complicated by chronic kidney disease. Materials and Methods. In the course of study 77 children with urolithiasis complicated by chronic renal failure (CRF) were examined. The patients were divided into 3 groups: 1st group - 16 patients (20.8 %) with solitary calculus in the pelvis; 2nd group - 38 patients (49.3 %) with multiple coral calculus, 3rd group - 23 patients (29.9 %) with multiple coral real calculus, calculus in the ureteropelvic junction and ureteral calculus. The authors conducted complex ultrasound examinations including triplex scanning with pulsed-wave Doppler sonography with color and power mapping. Results. The studies conducted showed that renal hemodynamics depended on urolithiasis severity and the degree of complications. Moreover, all speed hemodynamic parameters in the main renal artery, interlobar and interlobular arterial tree segments significantly reduced. This fact is directly related to vessel vasoconstriction and leads to mixed genesis hypoxia, ischemia, and in some cases to tubular damage or cortical necrosis.