Korean J Urol.  1999 Jun;40(6):734-739.

Uroflow Rate Nomogram in 4-12 Year Old Korean Girls

• Seo CW
• Park JS
• Shin IH

Abstract

PURPOSE: To establish normal reference ranges of urinary flow rate related to age, body surface area and voided volume in normal Korean pediatric females, uroflowmetry was performed and analyzed statistically.
MATERIALS AND METHODS
Uroflowmetry was performed on total 270 normal pediatric females who ranged in age from 4 to 12 years(mean+/-SD: 7.23+/-1.97 years). The height and weight were measured then body surface area was calculated by Mosteller`s formula. The uroflow data(peak and average flow) were grouped by age(4 to 6, 7 to 9 and 10 to 12 years old) and body surface area( 1.1 and<1.1 m2) then plotted in volume-related nomograms.
RESULTS
Mean values of peak and average flow rates were 13.33+/-4.44 & 7.51+/-2.6, 14.01+/-5.22 & 7.76+/-3.15, 20.40+/-6.84 & 10.89+/-3.97 ml/sec in each age group, and 13.57+/-4.87 & 7.61+/-2.96, 20.14+/-6.44 & 10.65+/-3.79 ml/sec in each body surface area group, respectively. Flow rates were increased significantly with voided volume, age and body surface area. Body surface area was found to be a more reliable index than age in the establishment of nomograms(p<0.05).
CONCLUSIONS
Nomograms of peak and average flow rates of normal Korean pediatric female were presented. These may be useful for diagnosing lower urinary tract disturbances in pediatric female over a wide range of age, body size and voided volumes.

Keyword

Pediatrics; Uroflow rates; Age; Body surface area; Voided volume

MeSH Terms

Body Size
Body Surface Area
Female*
Humans
Nomograms*
Pediatrics
Reference Values
Urinary Tract