Evaluation of bladder capacity in children with lower urinary tract symptoms: Comparison of 48-hour frequency/volume charts and uroflowmetry measurements

For children with MNE, both 48-hour frequency/volume charts and triplicate urine flow measurement with PVR evaluation are reliable methods of maximum bladder capacity evaluation. For children with OAB or DV, both methods may be necessary for accurate evaluation of decreased BC, as F/V chart and uroflow results may not be comparable.124Figure. Maximal voiding volume (48-hour frequency/volume chart) and bladder capacity (uroflowmetry) distribution according to age, plotted against reference bladder capacity distribution for children (65-150% estimated bladder capacity).