FIGURE 1. Pressure-flow study and derived voiding parameters.
Representative cystometry tracings showing the vesical pressure
(Pves), abdominal pressure (Pabd), detrusor pressure (Pdet), urethral
flow (Flow), voided volume (Vvod), infused volume (Vinf), and
intra-vesical volume (Vive). Although coughs (arrows) and Valsalva
maneuvers (triangles) induce marked fluctuations in the Pves and Pabd,
they exhibit trivial effect on the Pdet. The Pdet, Flow, Vvod, Vinf,
and Vive marked by the red bar at the bottom are displayed using a
faster time-base below. (B) Derived voiding parameters
including the mean voiding pressure (Pv), the voided volume (Vv), and
the voiding time (Tv).