The urodynamic laboratory.

This article reviews some of the technical, philosophical, and procedural aspects of the workings of a clinical urodynamic laboratory. Specifically considered are four widely used tests (cystometry, urethral profilometry, uroflowmetry, and electromyography) and the measuring and recording systems used to generate them. The role of urodynamic testing in the overall evaluation of patients with lower urinary tract dysfunction is addressed.