ESPU Congress 2018 - Abstract Book

65 11–14 APRIL, 2018, HELSINKI, FINLAND MATERIAL AND METHODS We retrospectively reviewed pediatric UPJO treated with pyeloplasty or PCN at our institution from 7/1/2010 to 9/30/2017 to determine the rate of POD (urine output >300 % of calculated mainte- nance fluid) in patients with a normal contralateral kidney. Patients with a solitary kidney or bilateral procedures were excluded. RESULTS 397/429 (92.5 %) patients with a normal contralateral kidney had treated UPJO. POD occurred 7 times (1.8 %): PCN (n=3), pyeloplasty (n=4). Median intervention age was 1.7 years (range 11 days – 18 years); median weight was 11.4 kg (range 3.7–54.2 kg). There was no significant difference in age, gender, affected kidney laterality, differential kidney size or function between those who developed POD and those who did not. Affected patients were managed with additional intravenous fluids and frequent electrolyte monitoring. Median initial post-procedure urine output was 5.9 mg/kg/hr (range 3.2 - 10.0 mg/kg/hr). Five had nephrostomy tubes following their proce- dure; two had indwelling stents. In those with nephrostomy tubes, median initial post-procedure urine output from the affected side was 6.1 mg/kg/hr (range 2.5–9.1 mg/kg/hr) and 0.8 mg/kg/ hr (range 0.4–0.9 mg/kg/hr) from the non-affected side. Median POD resolution was 3 days (range 2–4 days). One patient developed acidosis, acute renal insufficiency and lethargy. Mild hyponatremia developed in 2, hypokalemia in 1, hypomagnesemia in 0, hypophosphatemia in 1, and hypoglycemia in 1. CONCLUSIONS POD after resolution of UPJO with pyeloplasty or PCN with a normal contralateral kidney is a rare event (1.8 %) that requires careful monitoring given the potential for significant dehydration and electrolyte disturbances. 09:57–10:00 S6-5 (PP) PREDICTORS OF RECURRENCE AND COMPLICATIONS IN PEDIATRIC PYELOPLASTY Erman CEYHAN  1 , Fatih ILERI  1 , Taner CEYLAN  2 , Ahmet Murat AYDIN  3 , Hasan Serkan DOGAN  2 and Serdar TEKGUL  2 1) Hacettepe University School of Medicine, Urology, Ankara, TURKEY - 2) Hacettepe University School of Medicine, Pediatric Urology, Ankara, TURKEY - 3) Hacettepe University School of Medicine, Urology, Ankara, TURKEY PURPOSE Failed pyeloplasties are challenging cases. To point out ways of better manipulation we assessed the predictors of recurrence and complications in pediatric pyeloplasty. MATERIAL AND METHODS We analyzed 490 renal units whom underwent primary dismembered pyeloplasty with eligible data between June 2001 and October 2016 retrospectively. Patient’s demographic features, operative data, clinical findings, complications and recurrence rates were evaluated. RESULTS The mean follow-up time after pyeloplasty was 47.6 (±37.7) months. Our recurrence and complica- tion rates were 6.7 % and 11.4 %, respectively. Urinary tract infection (7.8 %), diversion related complications (1.8 %) and urinoma (1.4 %) were the most common complications. Presence of preoperative diversion (p=0.020) and experiencing early complications (p<0.001) after pyelo- plasty were significantly related to recurrence. Complication rates were founded less in children with