BJU INTERNATIONAL, cilt.88, sa.4, ss.335-338, 2001 (SCI-Expanded)
Objective To determine in vitro the effects of increments of external pressure on the pressure required to conduct fluid through ureters of various lengths at different flow rates, as the flow of a fluid through a collapsible tube is influenced by various factors (e.g. external pressure, the pressure gradient between the ends, the length and diameter of the tube, and the viscosity of fluid).