Uroflow Rate Nomogram in 4-12 Year Old Korean Girls / 대한비뇨기과학회지

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.

Uroflow Rate Nomograms related to Age and Voiced Volume in Korea Pediatric Males / 대한비뇨기과학회지

PURPOSE: To determine the uroflow rates of normal Korean pediatric male, uroflowmetry was peformed. MATERIALS AND METHODS: A total of the 237 normal children who ranged in age from 2 to 14 years(mean: 7.2+/-2.1years)was available for this study. Uroflow 1 data(peak and average flow) were plotted in volume-related nomograms in 3 different age groups : 2 to 4, 5 to7 and 8 to 14 years old. RESULTS: The mean peak flow(10.3+/-3.7, 12.2+/-4.9 and 14.3+/-5.2m1/sec) and average flow(6.4+/-2.6, 7.1)3.0 and 8.3+/-3.4m1/sec) were increased significantly with increasing age(p<0.05). In a same voided volume the peak and average flow rates were not increased significantly with increasing age but, in a same age group they were significantly increased according to the volume voided (p<0.05). Peak and average flow rates in the circumcision group(13.7+/-6.7, 8.3+/-4.7m1/sec) was not significantly different from non-circumcision group(10.9+/-5.0, 16.1+/-3.0ml/sec). CONCLUSIONS: These uroflow rate nomograms will be useful for the assessment of voiding action related to the voided volume and age in Korean pediatric males.