| urethral obstruction | Obstruction anywhere along the urethra. (12 Dec 1998) |
|---|---|
| urethral openings | See: external urethral orifice, internal urethral orifice. (05 Mar 2000) |
| urethral papilla | Papilla urethralis, the slight projection often present in the vestibule of the vagina marking the urethral orifice. (05 Mar 2000) |
| urethral plate | An endodermal plate located ventromedially in the developing genital tubercle of a young embryo; it later opens to form the lining of the penile urethra. (05 Mar 2000) |
| urethral pressure profile | The continual recording of pressure through a hole in the side of a small catheter as it is pulled (at a constant rate while either water or a gas is infused through the hole) from a point within the bladder, through the vesical neck, and down the entire urethra; a form of resistance measurement which gives a tracing indicative of the functional length of the urethra and the points of maximal urethral resistance. (05 Mar 2000) |
| urethral stricture | <urology> A narrowing of the urethra that results from inflammation, injury or infection. (27 Sep 1997) |
| urethral surface of penis | The surface of the penis opposite to the dorsum penis. Synonym: facies urethralis penis. (05 Mar 2000) |
| urethral syndrome | <syndrome, urology> Symptoms of a urinary tract infection although the urine is sterile when analysed. This suggests the infection is localised to the urethra (urethritis). Treated with antibiotics. (27 Sep 1997) |
| urethral valves | Folds in the urethral mucous membrane. See: anterior urethral valve, posterior urethral valves. (05 Mar 2000) |
| acorn-tipped catheter | A catheter used in ureteropyelography to occlude the ureteral orifice and prevent backflow from the ureter during and following the injection of an opaque medium. (05 Mar 2000) |
| angiography catheter | A thin-walled tube suitable for percutaneous puncture and powered injection of contrast media for radiography; catheter diameter is measured on the French scale. (05 Mar 2000) |
| balloon catheter | A catheter used in arterial embolectomy or to float into the pulmonary artery. (05 Mar 2000) |
| balloon-tip catheter | A tube with a balloon at its tip that can be inflated or deflated without removal after installation; the balloon may be inflated to facilitate passage of the tube through a blood vessel (propelled by the bloodstream) or to occlude the vessel in which the tube alone would allow free flow; such catheter's are used to enter the pulmonary artery to facilitate haemodynamic measurements or to enter arteries and then remove them while inflated to withdraw clots (embolectomy catheter). See: Swan-Ganz catheter. Synonym: Fogarty catheter. (05 Mar 2000) |
| bicoudate catheter | Catheter bicoude, an elbowed catheter with a double bend. Origin: bi + Fr. Coude, bent (05 Mar 2000) |
| Bozeman-Fritsch catheter | A slightly curved double-channel uterine catheter with several openings at the tip. (05 Mar 2000) |