Analysis of the urethral pressure profile using a mechanical model.
Using a model of the urethra designed to ensure a predictable pressure profile along its length, we investigated optimal parameters for gas and water profilometry. In gas profilometry, the response characteristics of the machine, attributable to the highly compressible nature of gas, were shown to be the most important determinants of accuracy. Gas and water profilometry have drawbacks that make clinical results inaccurate. However, if all measuring parameters are carefully recorded and considered when a pressure profile is analyzed, system error can be decreased from 62 to 5% by using the optimal pull and flow rates determined by this study.
D006874:Hydrostatic Pressure; D008297:Male; D008365:Manometry; D008961:Models, Structural; D009997:Osmotic Pressure; D011312:Pressure; D014521:Urethra / Q000502:physiology*