| catheter | <apparatus> A tubular, flexible, surgical instrument for withdrawing fluids from (or introducing fluids into) a cavity of the body, especially one for introduction into the bladder through the urethra for the withdraw of urine. Origin: Gr. Katheter (18 Nov 1997) |
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| catheter a demeure | An obsolete term for a catheter that is retained for a considerable period in the urethra. Origin: Fr. Demeurer, to dwell (05 Mar 2000) |
| catheter ablation | Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (dc-shock) or alternating current at radiofrequencies (usually 750 khz). The technique is used most often to ablate the av junction and/or accessory pathways in order to interrupt av conduction and produce av block in the treatment of various tachyarrhythmias. (12 Dec 1998) |
| catheter coude | A catheter with an angular bend near the beak; used to rise over prostatic obstruction. Synonym: catheter coude, prostatic catheter. (05 Mar 2000) |
| catheter fever | An elevation of temperature, usually slight and transitory, following catheterization of the urethra, or the passage of blood clots, gravel, or a calculus. Synonym: catheter fever, urethral fever. (05 Mar 2000) |
| catheter gauge | A metal plate with holes of graduated diameter used to determine the size of a catheter. (05 Mar 2000) |
| catheter guide | A flexible metallic wire or thin sound over which a catheter is passed to advance it into its proper position, as in a blood vessel or the urethra. See: stylet. (05 Mar 2000) |
| catheterisation | <procedure> The placement of a catheter in a specific anatomic area most commonly for the purpose of treatment or diagnosis. (27 Sep 1997) |
| catheterise | To pass a catheter. (05 Mar 2000) |
| catheterization | Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from intubation in that the tube here is used to restore or maintain patency in obstructions. (12 Dec 1998) |
| catheterization, central venous | Placement of an intravenous catheter in the subclavian, jugular, or other central vein for central venous pressure determination, chemotherapy, haemodialysis, or hyperalimentation. (12 Dec 1998) |
| catheterization, peripheral | Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes. (12 Dec 1998) |
| catheterization, swan-ganz | Placement of a flow-directed catheter (developed by cardiologists swan and ganz) for measuring pulmonary arterial pressures. The catheter is introduced into the venous system via the basilic, internal jugular, or subclavian vein, and is guided by blood flow into the superior vena cava, the right atrium and ventricle, and into the pulmonary artery. (12 Dec 1998) |
| catheterostat | A stand for holding catheters. Origin: catheter + G. Statos, standing (05 Mar 2000) |
| catheters, indwelling | Catheters designed to be left within an organ or passage for an extended period of time. (12 Dec 1998) |
| 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) |
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| 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) |
| Braasch catheter | A bulb-tipped catheter used for dilation and calibration. (05 Mar 2000) |
| brush catheter | A ureteral catheter with a finely bristled brush tip that is endoscopically passed into the ureter or renal pelvis and by gentle to-and-fro movement brushes cells from the surface of suspected tumours. (05 Mar 2000) |
| cardiac catheter | <cardiology> A catheter that can be passed into the heart through a vein or artery, to withdraw samples of blood, measure pressures within the heart's chambers or great vessels, and inject contrast media. It is used mainly in the diagnosis and evaluation of congenital, rheumatic, and coronary artery lesions and to evaluate systolic and diastolic cardiac function. Synonym: cardiac catheter. (05 Mar 2000) |
| pacing catheter | A cardiac catheter with one or more electrodes at its tip which can be used to artificially pace the heart. (05 Mar 2000) |
| Malecot catheter | A two-or four-winged catheter. (05 Mar 2000) |
| vertebrated catheter | A catheter made of several segments moving on each other like the links of a chain. (05 Mar 2000) |
| central venous catheter | <equipment> Small, flexible plastic tube inserted into the large vein above the heart, through which drugs and blood products can be given and blood samples withdrawn painlessly. Synonym: central line, Hickman catheter. (12 Jan 1998) |
| Gouley's catheter | A solid curved steel instrument grooved on its inferior surface so that it can be passed over a guide through a urethral stricture. (05 Mar 2000) |
| peripherally inserted central catheter | <equipment> A catheter inserted into an arm vein and used for periods of up to three months. This catheter does not need to be surgically implanted and can be inserted at home by a trained nurse. (09 Oct 1997) |