ABSTRACT
Urodynamic evaluation yields invaluable information about lower urinary tract function in infants and children. A child with suspected lower urinary tract dysfunction deserves a detailed history including previous urinary tract infection or surgery, trauma, and neurologic disease. The less invasive uroflowmetry should be performed as an initial investigation of lower urinary tract dysfunction in children. Uroflowmetry can be used in any patient with suspected lower urinary tract dysfunction. The availability of nomograms for analysis of uroflow data have been helpful in providing relative data for size and weight while recognizing that the absolute interpretation can be misleading. Some children require more extensive urodynamic studies, which includes a cystometrogram to determine bladder capacity, contractility, compliance, voiding, and continence. Hjalmas described intravesical pressures to be lower in girls than in boys, lower in infants than in older children, but independant of age.
