Akademik Veri Yönetim Sistemi
IURES ULUSLARARASI ÜROLOJİ ARAŞTIRMALARI DERNEĞİ KONGRESİ, İstanbul, Türkiye, 18 - 20 Mayıs 2023, ss.24
Background: Uroflowmetry is a simple and easily applicable tool for assessing lower urinary tract (LUT)
function. While there are worldwide-accepted reference values for LUT assessment in adults, there is limited
knowledge for children. In this study, we aimed to determine the reference values of uroflowmetry parameters
in healthy Turkish children between 5 and 15 years of age.
Materials and Methods: Children aged between 5-15 years were enrolled in the study. Children with a voided
volume of less than half of the functional capacity determined by age, those with a staccato or interrupted pat-
tern, and a post void residual volume of more than 10% of expected bladder capacity were excluded. Voided
volume, maximum flow rate (Qmax), average flow rate (Qave), duration of voiding and time to maximum flow
rate were evaluated. Children were divided into two groups as 5-10 years (Group 1) and 11-15 years (Group 2).
Comparisons were made between both groups and genders. Shapiro-Wilk analysis was used for continuous data
while T test and Mann Whitney U tests were used for intergroup comparisons.
Results: Records of 156 were included out of 170 children. There were 58 boys and 42 girls in group 1 while
35 boys and 21 girls in group 2. In total, mean maximum flow rate and mean average flow rate were higher in
females than males. In group 1, mean Qmax were 17.6±6.5 ml/s and 22.3±6.9 ml/s (p=0.001) in boys and girls,
respectively. In addition, mean Qave were 6.7±2.7 ml/s vs. 8.0±2.4 ml/s (p=0.013). In group 2, mean Qmax
were 25.7±8.5 ml/s and 38.8±15.7 ml/s (p=0.001) in boys and girls, while mean Qave was 10.2±2.9 ml/s vs.
12.3±4.6 ml/s (p=0.038). On the other hand, duration of voiding and time to maximum flow rate were statistical-
ly significantly higher in males than in females in group 2, 31.4±16.4 s vs. 20.9±11.8 s (p=0.006) and 12.3±8.4
s vs. 7.2±4.5 s (p=0.002), respectively.
Conclusion: Our study showed that there were significant differences between uroflowmetry parameters in
boys and girls and these values were changed according to age. Reference values highlighted in this study
should be kept in mind when evaluating children for LUT function using uroflowmetry.