Experience of managing neonates and breastfed in-fants with grade IV bilateral hydronephrosis

To analyze the clinical cases of four patients with grade IV bilateral hydronephrosis. Ultrasound examination of the urinary system was used as the main examination method. During the first stage of surgical treatment, all children underwent preliminary urinary diversion; a month later, the results were assessed. The result of the preliminary urinary diversion was the implementation of the Heines-Andersen-Kucher reconstructive operation. According to the control ultrasound performed a month after the nephrostomy, pelvis on the nephrostomy was reduced in all cases, parenchyma thickness increased by an average of 4.5 times, improvement in intragranular blood flow was noted. Evaluation of the effectiveness of pyeloplasty was carried out according to three criteria: restoration of urodynamics, restoration of kidney function and the presence of infectious complications. The parenchyma of the operated kidney grew by an average of 3 times, the pelvis decreased by an average of 3.5 times. Restoration of intrarenal blood flow to the cortical layer, inclusive, was noted in 5 of 8 renal units. Before pyeloplasty, there were marked changes in the renal parenchyma and a decrease in its function by an average of 34 ± 14 %; a year after reconstructive surgery, the changes became moderate, there was an improvement in renal function, a decrease in function by 25 ± 10 %. In our opinion, the starting method for providing urgent surgical care to neonates and breastfed infants with grade IV GN is preliminary urinary diversion, which allows us to determine the functional reserve of the renal parenchyma, delay reconstructive surgery, thereby giving time for the restoration of renal function and avoiding organ-carrying surgery.