Simultaneous in vivo comparison of water‐filled and air‐filled pressure measurement catheters: Implications for good urodynamic practice

Abstract

This study shows that AFCs and WFCs cannot be assumed to register equal values of pressure. It has further shown that even when the p_det readings are compared with their value at the start of a test, a divergence of values of up to 10 cmH₂ O remains. If AFCs are used, care must be taken to compensate for any p_det variations that occur during patient movement. Before AFCs are adopted, new normal values for resting pressures need to be developed to allow good quality AFC pressure readings to be made. Neurourol. Urodynam. 35:926-933, 2016. © 2015 Wiley Periodicals, Inc.