Biomaterial Database

The urethral pressure profile during flow. An experimental study. 1984

B Asklin, and B E Erlandson, and G Johansson, and S Pettersson

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.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008954	Models, Biological	Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.	Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D011312	Pressure	A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Pressures
D001743	Urinary Bladder	A musculomembranous sac along the URINARY TRACT. URINE flows from the KIDNEYS into the bladder via the ureters (URETER), and is held there until URINATION.	Bladder,Bladder Detrusor Muscle,Detrusor Urinae,Bladder Detrusor Muscles,Bladder, Urinary,Detrusor Muscle, Bladder,Detrusor Muscles, Bladder
D002408	Catheters, Indwelling	Catheters designed to be left within an organ or passage for an extended period of time.	Implantable Catheters,In-Dwelling Catheters,Catheter, In-Dwelling,Catheter, Indwelling,Catheters, In-Dwelling,In Dwelling Catheters,In-Dwelling Catheter,Indwelling Catheter,Indwelling Catheters
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014521	Urethra	A tube that transports URINE from the URINARY BLADDER to the outside of the body in both the sexes. It also has a reproductive function in the male by providing a passage for SPERM.	External Urethral Sphincter,External Urinary Sphincter,Internal Urethral Sphincter,Internal Urinary Sphincter,Internal Vesical Sphincter,Urethral Sphincters,External Urethral Sphincters,External Urinary Sphincters,Internal Urethral Sphincters,Internal Urinary Sphincters,Internal Vesical Sphincters,Sphincter, External Urethral,Sphincter, External Urinary,Sphincter, Internal Urethral,Sphincter, Internal Urinary,Sphincter, Internal Vesical,Sphincter, Urethral,Urethral Sphincter,Urethral Sphincter, External,Urethras,Urinary Sphincter, External,Urinary Sphincter, Internal,Vesical Sphincter, Internal
D014546	Urinary Catheterization	Passage of a CATHETER into the URINARY BLADDER or kidney.	Catheterization, Ureteral,Catheterization, Urethral,Catheterization, Urinary,Foley Catheterization,Ureteral Catheterization,Urethral Catheterization,Catheterization, Foley,Catheterizations, Ureteral,Catheterizations, Urethral,Catheterizations, Urinary,Ureteral Catheterizations,Urethral Catheterizations,Urinary Catheterizations
D014563	Urodynamics	The mechanical laws of fluid dynamics as they apply to urine transport.	Urodynamic