PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 6505641

The urethral pressure profile during flow. An experimental study.

B Asklin·B E Erlandson·G Johansson·S Pettersson
View original source ↗Export metadata ↓

Abstract

As part of a project aimed at developing a method for accurate evaluation of the position and significance of infravesical outflow obstructions, a technique for recording urethral pressure profiles during flow in male patients was tested in a rigid bladder-urethral model. The catheter which proved to give the most accurate recording of the static pressure in the urethral model had a measuring eye about 250 mm from the tip. With this arrangement, the tip of the catheter did not leave the bladder until the measuring eye had passed the whole length of the urethra and the effective diameter of the urethra and the flow did not change during the recording. The pressure profiles for the different urethral models closely resembled the theoretically calculated curves. Furthermore, the constant recording conditions made it possible to compensate for the influence of the measuring catheter and to calculate the "true" diameter as well as the "true" resistance in different segments of the models.

Explore related subjects

Catheters, IndwellingHumansMaleModels, BiologicalPressureUrethraUrinary BladderUrinary CatheterizationUrodynamicsJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

B Asklin, B E Erlandson, G Johansson, S Pettersson. 1984. The urethral pressure profile during flow. An experimental study.. https://doi.org/10.3109/00365598409180194

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

The role of surgery in the management of septic shock--extra-abdominal causes of sepsis.

Septic shock is a severe inflammatory response to one or more pathogenic micro-organisms. When a person's immune response is excessively intense, a cascade of phenomena may be activated that ultimately is harmful. Appropriate management of septic shock may include surgical intervention to remove or neutralize the septic focus in an effort to treat the inflammatory response cascade. This is the first of two articles presenting current information on the role of surgery in the management of a patient with septic shock. This article describes extra-abdominal sources of sepsis.

Catheters, Indwelling↗
PubMed2007

Compatibility of electrolytically produced sodium hypochlorite solutions on long- term implanted dialysis catheters.

More than 20% of the world's population use a catheter for dialysis, despite guidelines limiting their use. Although the structure and design of the catheters differ by manufacturer, the material used in central venous catheters and peritoneal dialysis catheters are the same across manufacturers. Given the long-term use of these catheters in the dialysis population, the good compatibility of the antiseptics and disinfectants used on the catheters is imperative to prevent failure and cracking of the catheter material. Tensile strengths of commercially available catheters were measured after exposure to commonly used disinfectants. The tensile strength was then compared between the catheters by analyzing the displacement vs. force (N) curves produced during the evaluation. A total of 44 catheter lumens were evaluated. The electrolytically produced sodium hypochlorite solution, Alcavis 50/ExSept Plus, was the only solution shown to be compatible with all three catheter materials resulting in a deviation of less than 10% for each of the different catheter types. Electrolytically produced sodium hypochlorite solutions were the only solutions in this study that did not alter the physical properties of any of the catheters after long-term exposure.

Catheters, Indwelling↗