Evaluation of Doppler ultrasonography for the diagnosis of urinary retention in the follow up of patients undergoing endoscopic treatment of vesicoureteral

Abstract

VUR, or the retrograde flow of urine from the bladder into the ureter, is an anatomic and/or functional disorder with potentially serious consequences such as renal scarring, hypertension, and renal failure. Patients with VUR demonstrate a wide range of severity. The main goal in the management of patients with VUR is the preservation of kidney function by minimizing the risk of pyelonephritis. By defining and analyzing the risk factors for each patient (age, sex, reflux grade, lower urinary tract dysfunction, anatomic abnormalities, and kidney status), it is possible to identify those patients with a potential risk of upper urinary tract infection (UTI) and renal scarring. Controversy persists over the optimal management of VUR, particularly the choice of diagnostic procedures, in this study, we decided to investigate the accuracy of Doppler ultrasonography for the diagnosis of urinary retention in the follow up of patients undergoing endoscopic treatment of vesicoureteral reflux

Methods: This study was conducted on 30 patients with vesicoureteral reflux undergoing open or endoscopic surgery in Tabriz University of Medical Sciences educational hospitals during 2018. Three months later, Doppler ultrasound was performed to determine the presence of reflux and the sensitivity, specificity, positive predictive value and negative predictive value of Doppler ultrasound were determined. Results: We analyzed 30 children with suspected VUR who underwent Doppler ultrasound and VCUG in Tabriz University of Medical Sciences. Reflux was diagnosed in 5 patients by Doppler ultrasound and in 7 patients by VCUG. One case with reflux in RNC was not detected by VUS, and 2 cases with reflux in VCUG were not detected by ultrasound.