Uroflowmetric analysis and derivation of nomograms for normal paediatric Indian population between 5 to 15 years of age

• Published in: Asian Journal of Urology Vol. 9; no. 2; pp. 125 - 131
• Main Authors: Mahajan, Abhay D, Singh, Lakshman P, Darakh, Prashant P, Bathe, Sandeep T, Patil, Martand G, Sharma, Arpit R
• Format: Journal Article
• Language: English
• Published: Singapore Second Military Medical University 01.04.2022; Elsevier
• Subjects: Flow rate; Nomograms; Original; Pediatric; Uroflowmetry; Voided volume; Uroflowmetry; Flow rate; Pediatric; Nomograms; Voided volume
• ISSN: 2214-3882; 2214-3890
• DOI: 10.1016/j.ajur.2021.08.001

We aimed to established normal uroflowmetric values and subsequently derived nomograms of maximum flow rate (Q ) and average flow rate (Q ) against voided volume (VV) in children aged 5-15 years at our institute. A total of 440 children underwent uroflowmetric evaluation with no history of urological, renal, psychiatric, or neurological disorder between 5 and 15 years of age. Each subject data regarding Q , Q , VV, time to Q , and flow time, as well as age, sex, height, and weight were recorded. Of the 440 children, around 300 (68.18%) children could produce a normal flow rate at VV of more than 50 mL. Of the remaining 140 (31.82%) children, 50.00% voided less than 50 mL, and remaining 50.00% had abnormal voiding pattern, staccato or interrupted (21.43% each) and plateau or tower shaped (3.57% each). Cases were divided into two age groups (5-9 years and 10-15 years), and uroflowmetric analysis was done between boys and girls in both age groups to derive nomograms of Q and Q . Q and Q flow nomograms were plotted for boys and girls. Mean Q for boys was 16.68 mL/s and for girls 20.69 mL/s. The mean Q values were 11.04 mL/s and 8.60 mL/s for girls and boys, respectively. The Q and Q values were higher in girls. There were significant increases in flow rates with increasing age, body surface area, and VV in both sexes. Nomograms for Q and Q may be a useful tool in evaluation of lower urinary tract disturbances in children.