arterial catheter

arterial catheter

Etymology: Gk, arteria, airpipe, katheter, a thing lowered into

a tubular instrument that can be inserted into an artery either to draw blood or to measure blood pressure directly.

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catheter

a tubular, flexible instrument, passed through body channels for withdrawal of fluids from (or introduction of fluids into) a body cavity.

Balloon-tipped angiographic (Berman) catheter By permission from Darke P, Kelly DF, Bonagura JD, Color Atlas of Veterinary Cardiology, Mosby, 1995

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angiographic catheter

one through which a contrast medium is injected for visualization of the vascular system of an organ. Such catheters may have preformed ends to facilitate selective locating (as in a renal or coronary vessel) from a remote entry site. They may be named according to the site of entry and destination, such as femoral-renal and brachial-coronary.

arterial catheter

one inserted into an artery and utilized as part of a catheter-transducer-monitor system to continuously observe the blood pressure of critically ill patients. An arterial catheter also may be inserted for x-ray studies of the arterial system and for delivery of chemotherapeutic agents directly into the arterial supply of malignant tumors.

butterfly catheter

a metal needle with flexible plastic 'wings' and a short length of tubing. The 'wings' assist in placement and facilitate fixation with tape.

Butterfly catheter. By permission from Hall L, Clarke KW, Trim C, Veterinary Anaesthesia, Saunders, 2000

cardiac catheter

a long, fine catheter especially designed for passage, usually through a peripheral blood vessel, into the chambers of the heart under fluoroscopic control. See also cardiac catheterization.

cardiac biopsy catheter

introduced intravenously under the direction of fluoroscopy, can be positioned in the right or left ventricle and an endocardial biopsy obtained.

central venous catheter

a long, fine catheter inserted into a vein for the purpose of administering through a large blood vessel parenteral fluids (as in parenteral nutrition), antibiotics and other therapeutic agents. This type of catheter is also used in the measurement of central venous pressure. See also central venous catheterization.

column disk catheter

an indwelling device for continuous peritoneal dialysis. It is implanted within the peritoneal cavity, resting against the body wall. The attached Silastic tubing is used for infusing and draining the dialysate at intervals.

double-lumen catheter

one having two channels; one for injection and one for removal of fluid.

catheter drainage

a catheter left in place to keep the bladder drained. Preferably should have a one-way valve to avoid aspiration of air and infection.

elbowed catheter

a catheter bent at an angle near the beak.

indwelling catheter

one especially designed so that it is held in place in the urethra for the purpose of draining urine from the bladder.

over-the-needle catheter

a large-bore sharp needle housed with an indwelling stilette, inside a thin-walled plastic tube. An incision is made over the filled vein, the needle-cannula inserted, the stilette withdrawn, then the needle, leaving the plastic cannula in situ.

self-retaining catheter

one constructed to remain in the bladder, effecting constant drainage.

through-the-needle

the catheter is housed within the needle which is used to enter the blood vessel. After insertion, the needle may be removed by withdrawing, but leaving the catheter in place. A protective housing may be provided to cover the needle.

tracheal catheter

one with small holes at the terminal 1 inch, especially designed for removal of secretions during tracheal suctioning.

ureteral catheter

a long, extremely small gauge catheter designed for insertion directly into a ureter.

urethral catheter

any of various types of catheters designed for insertion via the urethra into the urinary bladder. See also catheterization.