ESPU Congress 2018 - Abstract Book

55 11–14 APRIL, 2018, HELSINKI, FINLAND 08:55–08:58 S5-2 (PP) DIAGNOSTIC ACCURACY OF VOIDING DYSFUNCTION PATTERNS AS A PREDICTIVE TOOL OF VESICOURETERAL REFLUX RESOLUTION AFTER FIRST ENDOSCOPIC TREATMENT Agustín SERRANO-DURBÁ, José A MARCH, Alba POLO, Povo IVAN, Mari Angeles CONCA and Carlos DOMÍNGUEZ La Fe Universitarian Hospital, Pediatric Urology Unit, Valencia, SPAIN PURPOSE To design a classification of dysfunctional voiding patterns associated with vesicoureteral reflux in children, to evaluate the diagnostic performance of it and compare it with the existing classification. MATERIAL AND METHODS Cross-sectional ambispective study of 48 children with vesicoureteral reflux treated between January 2013 and February 2015. Those with previous endoscopic treatment, age <3 years, anatomical or neurological abnormalities and a history of urethroplasty or major abdominal surgery were excluded. Demographic, anatomical, surgical and noninvasive urodynamic variables (voiding diary, uroflowmetry with electromyography, residual urine and bladder wall thickness) were col- lected. The outcome variable was the correctness of reflux (by isotopic cystography) three months after the endoscopic treatment. A classification of voiding patterns was performed taking into ac- count the most relevant variables for the outcome and diagnostic performance was evaluated finally compared with the Van Batavia et al dysfunctional voiding classification1. RESULTS Mean age of the sample was 6.8 +/- 2.28 years. The rate of reflux correction after the first treatment was 77 %. All urodynamic variables were included in the classification, which correctly identified 75 % of our sample, with sensitivity of 87.8 %, specificity 46.6 %, positive predictive value (PPV) 78.3 % and negative predictive value (NPV) 63,6 %. Using Van Batavia et al classification: sensitiv- ity 32,4 %, specificity 54,55 %, PPV 70,59 %, NPV 19,35 %. CONCLUSIONS Our classification shows good sensitivity and better predictive values of the result after first endo- scopic treatment and it can be compared with the Van Batavia et al classification.