title: Evaluation of maximum voided volume in Korean children by use of a 48-h frequency volume chart.
abstract: Study Type - Diagnostic (validating cohort). Level of Evidence 2a. What's known on the subject? and What does the study add? The relationship between the maximum voided volume followed a linear curve. The formula presented, bladder capacity (mL) = 12 ×[age (years) + 11], is thought to be a reasonable one for Korean children. Korean children have a smaller bladder capacity than that reported in previous Western studies.
  
  
  OBJECTIVE
  • To develop practical guidelines for the prediction of normal bladder capacity in Korean children measured by a frequency volume chart (FVC), maximum voided volume (MVV) is an important factor in the diagnosis of children with abnormal voiding function.
  
  
  METHODS
  • In all, 298 children, aged 3-13 years, with no history of voiding disorders volunteered for the study. The MVV was determined in 219 subjects by use of a completely recorded FVC.
  
  
  RESULTS
  • Linear regression analysis was used to define the exact relationship between age and bladder capacity. An approximate formula related age to bladder capacity as follows: bladder capacity (mL) = 12 ×[age (years) + 11].
  
  
  CONCLUSIONS
  • The relationship between the MVV measured by a FVC by age (3-13 years) of Korean children followed a linear curve. • When applied to normal voiding patterns, the formula presented appears to be a reasonable one for Korean children.
authors.affiliation: Department of Urology, Chonnam National University College of Medicine, Gwangju, Republic of Korea.
authors.forename: Sun-Ouck
authors.initials: SO
authors.lastname: Kim
authors.forename: Kyung Do
authors.initials: KD
authors.lastname: Kim
authors.forename: Young Sig
authors.initials: YS
authors.lastname: Kim
authors.forename: Jun Mo
authors.initials: JM
authors.lastname: Kim
authors.forename: Du Geon
authors.initials: du G
authors.lastname: Moon
authors.forename: Sungchan
authors.initials: S
authors.lastname: Park
authors.forename: Sang Don
authors.initials: SD
authors.lastname: Lee
authors.forename: Jae Min
authors.initials: JM
authors.lastname: Chung
authors.forename: Won Yeol
authors.initials: WY
authors.lastname: Cho
mesh_terms: D000293:Adolescent; D000367:Age Factors; D044466:Asian People / Q000208:ethnology*; D002648:Child; D002675:Child, Preschool; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008297:Male; D012015:Reference Standards; D056910:Republic of Korea; D001743:Urinary Bladder / Q000502:physiology*; D014554:Urination / Q000502:physiology*; D014556:Urine; D014563:Urodynamics / Q000502:physiology