Abstract Book - 26th ESPU Congress, Joint Meeting with ICCS + SPU + AAP/SOU + AAPU + SFU

S27-9

(P)

IS IT NECESSARY TO REPEAT THE UROFLOWMETRY IN CHILDREN?

Seung Hyun YANG

, Sang Woon KIM

, Cho Nyeong LEE

, Ju Hee CHON

, Byung Hoon CHI

, Young Jae IM

and Sang

Won HAN

1) Yonsei University Health System, Bladder-Urethra Rehabilitation Clinic, Seoul, KOREA (REPUBLIC OF) - 2) Yonsei

University College of Medicine, Department of Urology, Urological Science Institute, Seoul, KOREA (REPUBLIC OF)

PURPOSE

The goal of this study was to evaluate the necessity of a repeated UF in children by comparing the parameters of

repeated UF.

MATERIAL AND METHODS

Medical records of the children who first visited our hospital between August 2013 and May 2014 for lower urinary tract

symptoms were obtained retrospectively. During this period, 120 children with age of 6-10 years who underwent UF

were included in the study. Of these, 58 children underwent repeated UF. UF was repeated under the conditions below:

abnormal shape, including staccato or irregular, tower, interruption or plateau and too small volume for evaluation (less

than 30% of estimated bladder capacity.

RESULTS

Average values of the voided volume (87.8±63.9 vs 141.9±72.1, p<0.001), maximal (14.5±9.0 vs 19.3±6.8, p<0.001)

and average flow rate (8.4±5.3 vs 12.5±4.4, p<0.001) were lower in repeated UF group than 62 single UF children,

while other parameters demonstrated no significant differences. On 2nd UF, voided volume was significantly increased

(87.8± 63.9 to 136.7±74.7ml, p<0.001), followed by increased maximal flow rate (14.5±9.0 to 18.6±9.6ml/s,

p<0.001) and average flow rate. After classification according to the amount of increased voided volume, the group

showing more increase of voided volume on 2nd UF (Group 2) demonstrated less residual volume (12.2±17.2 vs

0.67±2.0ml, p=0.002) and voiding time (16.7±9.2 vs 9.5±5.2, p=0.002) on 1st UF than Group 1(less increase of

voided volume on 2nd UF). Children showing small voided volume and tower shape uroflow curve on 1st UF were more

prevalent in group 1. Children showing small voided volume and tower shape uroflow curve on 1st UF demonstrated

significant increase of voided volume on 2nd UF (20.7±9.0 vs 48.6±22.0ml, p<0.001;27.9±18.7 vs 59.0±20.0ml,

p=0.008).

CONCLUSIONS

Repetition of uroflowmetric study seems to increase voided volume, consequently maximal flow rate and these changes

were demonstrated more clearly in children showing small voided volume or tower shape of uroflow curve in the 1st

test.