Demystifying leak point pressures: the valuable tool for functional assessment.

: Leak point pressures have evolved over the last several years as tools for functional bladder assessment. Often, the term leak point pressure is used when referring to abdominal leak point pressures (ALPP). In fact, there are two leak point pressure measurements in urodynamics, ALPP and detrusor or bladder leak point pressures (DLPP). Defining these two leak point pressures and understanding their very different intrinsic values are important goals for the urodynamicist.