Urethral pressure profile measurements in children.

After a brief representation of the physiological processes during micturition in the region of the bladder-urethra junction, the pathological changes in neurogenic micturition dysfunctions leading to an increase of the infravesical flow resistance are considered. A suitable procedure for determining exactly the dysfunction is the registration of a urethral pressure profile. The construction is based on pressure measurement by means of a catheter with a lateral eye, with constant slow perfusion. Measuring errors had to be determined in preliminary trials. Examples of investigations in children with various subvesical urinary dysfunctions demonstrates different points concerning this method.