ESPU Congress 2018 - Abstract Book

150 29 th CONGRESS OF THE ESPU MATERIAL AND METHODS Between July 2015 and July 2017 we prospectively evaluated bladder function of all infants (0–3 months) with PUV after primary resection using 4-hour voiding observation. Voiding pattern, number of voids, voided volume (VV) and immediate post void residual (PVR) were recorded. Estimated bladder capacity (eBC) was determined using Capacity (ml) = 7 × weight (kg) (Fairhurst et al. J Pediatr Surg1991;26(1):55–7). Large and small BC were defined as >150 % and <65 % eBC respectively. All results given as median (range). RESULTS Twenty-one male infants, median age 21 days (5–94 ) were included. Four hour voiding obser- vation was performed within 7 days (median 1 day) after catheter removal post primary valve resection. Babies voided an average 5 times during the 4 hour study, but with great variability (2–15 voids). Bladder capacity (BC) was large in 10 (47 %) and small in 2 (9.5 %)andmedian ratio BC/eBC=1.25 (0.58–5). Median residual urine was 8 ml (0–120). In 9 babies (43 %) PVR was larger than VV. Ten babies (47 %) emptied their bladders almost completely at least once during the study. Interrupted stream was recorded in 7 babies (33 %). After the assessment 7 (33 %) babies were started on Clean Intermittent Catheterization (CIC) and 1 was commenced on anticholinergic medication. CONCLUSIONS Following valve resection, babies have variable voiding patterns and more than half have incom- plete bladder emptying and abnormal bladder capacity compared to the expected for age. 16:35–16:47 Discussion