Catheter

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catheter

 [kath´ĕ-ter]
a tubular, flexible instrument, passed through body channels for withdrawal of fluids from (or introduction of fluids into) a body cavity.
 Straight catheters. May have one or two eyes, a round tip, or a “whistle” tip. These catheters are not self-retaining.
acorn-tipped catheter one used in ureteropyelography to occlude the ureteral orifice and prevent backflow from the ureter during and following the injection of an opaque medium.
Amplatz coronary catheter a J-shaped angiographic catheter used as an alternative to a Judkins coronary catheter in coronary arteriography.
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, used 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.
atherectomy catheter a catheter containing a rotating cutter and a collecting chamber for debris, used for atherectomy and endarterectomy; it is inserted percutaneously under radiographic guidance.
balloon catheter (balloon-tip catheter) a catheter with a balloon at the tip that may be inflated or deflated while the catheter is in place to create, enlarge, or occlude a passageway; see also balloon angioplasty. The pressure-sensitive balloon may be used to facilitate hemodynamic monitoring.
Braasch bulb catheter a bulb-tipped ureteral catheter used for dilation and determination of the inner diameter of the ureter.
Brockenbrough transseptal catheter a specialized cardiac catheter with a curved steel inner needle that can puncture the interatrial septum; used to catheterize the left ventricle when the aortic valve cannot be crossed in a retrograde approach.
Broviac catheter a central venous catheter similar to the Hickman catheter but with a smaller lumen.
cardiac catheter a long, fine catheter especially designed for passage into the chambers of the heart, usually through a peripheral blood vessel under fluoroscopic control. See also cardiac catheterization.
Castillo catheter a cardiac catheter similar to an Amplatz coronary catheter in shape and use, but shorter and introduced via the brachial artery.
central venous catheter a long, fine catheter inserted via a large vein into the superior vena cava or right atrium to administer parenteral fluids (as in parenteral nutrition), antibiotics, or other therapeutic agents; it can also be used for measurement of central venous pressure and for temporary hemodialysis. See also central venous catheterization.
condom catheter an external urinary collection device that fits over the penis like a condom; used in the management of urinary incontinence.
conical catheter a ureteral catheter that has a cone-shaped tip designed to dilate the lumen.
Cournand catheter a cardiac catheter with a single end hole; used for pressure measurement, usually in the right heart.
DeLee catheter a catheter used to suction meconium and amniotic debris from the nasopharynx and oropharynx of neonates.
de Pezzer catheter a self-retaining urethral catheter with a bulbous end.
directional atherectomy catheter a type of atherectomy catheter whose direction can be shifted to shave off additional plaque.
double-channel catheter (double-lumen catheter) (dual-lumen catheter) a catheter with two channels, one for injection and the other for removal of fluids; called also two-way catheter.
elbowed catheter a catheter bent at an angle near the beak, used in cases of enlarged prostate. Called also prostatic catheter.
electrode catheter a cardiac catheter containing one or more electrodes; it may be used to pace the heart or to deliver high-energy shocks.
end-hole catheter a cardiac catheter with a hole in the tip, through which a guidewire may be passed or pressure monitored.
eustachian catheter one for inflating the eustachian tube.
female catheter a short urethral catheter for passage through the female urethra.
femoral catheter a central venous catheter inserted through the femoral vein.
fluid-filled catheter an intravascular catheter connected by a saline-filled tube to an external pressure transducer; used to measure intravascular pressure.
Fogarty catheter a type of balloon-tip catheter used to remove thrombi and emboli from blood vessels.
Foley catheter an indwelling catheter retained in the bladder by a balloon inflated with air or liquid; see illustration.
 Three-way Foley catheter. Three separate lumens are incorporated within the round shaft of the catheter for drainage of urine, inflation, and introduction of irrigating solutions into the bladder.
Gensini coronary catheter a catheter used for coronary arteriography, having an end-hole to accommodate a guidewire or monitor pressure as well as side holes for rapid injection of large volumes of contrast material.
Groshong catheter a single or double lumen cardiac catheter inserted into the right atrium with an external port. Unlike the Hickman and Broviac catheters, this type has a valve at the distal end, eliminating the need for clamping and preventing blood from entering it when not in use.
Gruentzig balloon catheter a flexible balloon catheter with a short guidewire fixed to the tip, used for dilation of arterial stenoses; the balloon is made of low-compliance plastic to reduce the risk of arterial rupture.
hemodialysis catheter a catheter used on a temporary basis for vascular access for hemodialysis; usually some type of central venous catheter.
Hickman catheter a type of central venous catheter used for long term administration of substances via the venous system, such as antibiotics, total parenteral nutrition, or chemotherapeutic agents; it can be used for continuous or intermittent administration and may have either a single or a double lumen.
indwelling catheter a urethral catheter designed to be held in place to drain urine from the bladder.
internal jugular catheter a central venous catheter inserted through the internal jugular vein.
Judkins coronary catheter a preformed J-shaped angiographic catheter used in coronary arteriography to cannulate and deliver contrast material to one of the coronary arteries via a percutaneous femoral route.
left coronary catheter one designed for coronary arteriography of the left coronary artery.
Malecot catheter
1. a two- or four-winged female catheter.
2. a tube with an expanded tip that is used for gastrostomy feedings.
manometer-tipped catheter one with a small pressure transducer on its tip; used in measuring intravascular or intracardiac pressure.
multipurpose catheter
1. a catheter with several functions or applications.
2. a catheter for coronary angiography that is shaped so that it can be used in either coronary artery.
nasal catheter one made of flexible rubber or plastic with several holes near the end; used for the administration of oxygen. Called also oropharyngeal catheter.
NIH catheter one used for coronary arteriography; it has a closed end and several side holes for rapid injection of large volumes of contrast material.
olive-tip catheter a ureteral catheter with an olive-shaped end, used to dilate a constricted ureteral orifice; larger sizes are also used for dilating or calibrating the diameter of urethral strictures.
oropharyngeal catheter nasal catheter.
pacing catheter a cardiac catheter containing one or more electrodes on pacing wires; used as a temporary cardiac pacing lead.
Pezzer's catheter de Pezzer catheter.
pigtail catheter an angiographic catheter ending in a tightly curled tip that resembles the tail of a pig.
preformed catheter a preshaped catheter designed to require less operator manipulation but usually restricted to a single function.
prostatic catheter elbowed catheter.
right coronary catheter one designed for coronary arteriography of the right coronary artery.
Robinson catheter a straight urethral catheter with two to six openings to allow drainage, especially useful in the presence of blood clots which may occlude one or more openings.
self-retaining catheter a urethral catheter constructed to be retained in the bladder and urethra; see Foley catheter and indwelling catheter.
snare catheter one designed to remove intracardiac catheter fragments or pacing leads introduced iatrogenically.
Sones coronary catheter a woven Dacron or polyurethane catheter used in coronary arteriography to cannulate and deliver contrast material to the coronary arteries via the brachial artery.
subclavian catheter a central venous catheter inserted through the subclavian vein.
Swan-Ganz catheter see swan-ganz catheter.
Tenckhoff catheter a cuffed silicone catheter that is permanently inserted into the abdominal cavity for infusion of dialyzing solution in patients undergoing peritoneal dialysis.
Texas catheter trademark for a commercially made condom catheter.
thermodilution catheter a catheter used in thermodilution for introduction of the cold liquid indicator into the cardiovascular system.
toposcopic catheter a miniature catheter that can pass through narrow, tortuous vessels to convey chemotherapy directly to brain tumors.
tracheal catheter one with small holes at the end, especially designed for removal of secretions during tracheal suctioning.
transhepatic biliary catheter biliary c.
transluminal endarterectomy catheter a type of atherectomy catheter with a conical cutting window, inserted through the lumen of the vessel; debris is collected in a special vacuum bottle.
transtracheal catheter a catheter inserted into the trachea through a tracheostomy for patients who cannot tolerate an oral or nasal cannula.
two-way catheter double-lumen catheter.
ureteral catheter a long, small gauge catheter designed for insertion directly into a ureter, either through the urethra and bladder or posteriorly via the kidney.
urethral catheter any of various types of catheters designed for insertion via the urethra into the urinary bladder. See also catheterization.
whistle-tip catheter a urethral catheter with a terminal opening as well as a lateral one.
winged catheter a urethral catheter that has winglike projections on the end to retain it in the bladder.

cath·e·ter

(kath'ĕ-ter),
1. A tubular instrument to allow passage of fluid from or into a body cavity or blood vessel.
See also: line (5).
2. Generally, a catheter designed to be passed through the urethra into the bladder to drain it of urine.
[G. kathetēr, fr. kathiēmi, to send down]

catheter

/cath·e·ter/ (kath´ĕ-ter)
1. a tubular, flexible surgical instrument that is inserted into a cavity of the body to withdraw or introduce fluid.
2. urethral c.
Catheter inserted into the abdomen.

angiographic catheter  one through which a contrast medium is injected for visualization of the vascular system of an organ.
atherectomy catheter  one with a rotating cutter and a collecting chamber for debris, used for atherectomy and endarterectomy and inserted under radiographic guidance.
balloon catheter  one whose tip has an inflatable balloon that holds the catheter in place or can dilate the lumen of a vessel, such as in angioplastic procedures.
cardiac catheter  a long, fine catheter designed for passage, usually through a peripheral blood vessel, into the chambers of the heart under radiographic control.
cardiac catheter-microphone  phonocatheter.
central venous catheter  a long, fine catheter introduced via a large vein into the superior vena cava or right atrium for administration of parenteral fluids or medications or for measurement of central venous pressure.
condom catheter  an external urinary collection device that fits over the penis like a condom; used in the management of urinary incontinence.
DeLee catheter  one used to suction meconium and amniotic debris from the nasopharynx and oropharynx of neonates.
double-channel catheter , double-lumen catheter one with two channels, one for injection and the other for fluid removal.
elbowed catheter  a urethral catheter with a sharp bend near the beak, used to get around an enlarged prostate.
electrode catheter  a cardiac catheter containing electrodes; it may be used to pace the heart or to deliver high-energy shocks.
female catheter  a short urethral catheter for passage through the female urethra.
fluid-filled catheter  an intravascular catheter connected by a saline-filled tube to an external pressure transducer; used to measure intravascular pressure.
Foley catheter  an indwelling catheter retained in the bladder by a balloon inflated with air or liquid.
Gouley catheter  a solid, curved steel urethral catheter grooved on its inferior surface so that it can pass over a guide through a urethral stricture.
Gruentzig balloon catheter  a flexible balloon catheter with a short guidewire fixed to the tip, used for dilation of arterial stenoses.
indwelling catheter  one held in position in the urethra.
pacing catheter  a cardiac catheter containing one or more electrodes on pacing wires; used as a temporary cardiac pacing lead.
prostatic catheter  elbowed c.
self-retaining catheter  indwelling c.
snare catheter  one designed to remove intracardiac catheter fragments introduced iatrogenically.
Swan-Ganz catheter  a soft, flow-directed catheter with a balloon at the tip for measuring pulmonary arterial pressures.
Tenckhoff catheter  any of several types commonly used in peritoneal dialysis, having end and side holes and one or more extraperitoneal felt cuffs making a bacteria-tight seal.
toposcopic catheter  a miniature catheter that can pass through narrow, tortuous vessels to convey chemotherapy directly to specific sites.
two-way catheter  double-lumen c.
ureteral catheter  one inserted into the ureter, either through the urethra and bladder or posteriorly via the kidney.
urethral catheter  one inserted through the urethra into the urinary bladder.
winged catheter  a urethral catheter with two projections on the end to retain it in place.

catheter

(kăth′ĭ-tər)
n.
A hollow flexible tube for insertion into a body cavity, duct, or vessel to allow the passage of fluids or distend a passageway. Its uses include the drainage of urine from the bladder through the urethra or insertion through a blood vessel into the heart for diagnostic purposes.

catheter

[kath′ətər]
Etymology: Gk, katheter, something lowered
a hollow flexible tube that can be inserted into a vessel or cavity of the body to withdraw or instill fluids, directly monitor various types of information, and visualize a vessel or cavity. Most catheters are made of soft plastic, rubber, or silicon. Kinds of catheters include acorn-tipped catheter, angiocatheter, Foley catheter, and intrauterine catheter.
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Indwelling catheter in a woman and a man

catheter

Clinical practice A thin, flexible tube placed in a vascular or other lumen–eg, bladder, and used to deliver fluids, nutrients or therapeutic, withdraw fluids, or obtain samples–eg, of blood, urine; the ideal IV catheter is made from a material that both inhibits the formation of thrombi–Silastic —and resists adherence of microorganisms–Teflon/polytetrafluoroethylene, or polyurethane. See Central venous catheter, Dilatation catheter, Dual-lumen catheter, Foley catheter, Groshong catheter, Guardian catheter, Hickman catheter, Indwelling catheter, Intrauterine pressure catheter, Lynx over-the-wire balloon catheter, Nitrofuran delivery catheter, PTCA balloon catheter, Pigtail catheter, Swan-Ganz catheter. Cf Phlebotomy.

cath·e·ter

(kath'ĕ-tĕr)
1. A flexible tube that enables passage of fluid from or into a body cavity or blood vessel.
See also: line (3)
2. A tube designed to be passed through the urethra into the bladder to drain it of urine; usually composed of latex, silicone, or soft plastic.
[G. kathetēr, fr. kathiēmi, to send down]

catheter

(kath'et-er) [Gr. katheter, a tube for insertion]
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TYPES OF CATHETERS: Single-lumen catheter
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TYPES OF CATHETERS: Double-lumen catheter
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TYPES OF CATHETERS: Triple-lumen catheter
A tube passed into the body for evacuating or injecting fluids. It may be made of elastic, elastic web, rubber, glass, metal, or plastic. See: illustration

antimicrobial-impregnated central catheter

An intravenous catheter saturated with antibiotics, designed to decrease the likelihood of colonization or infection of indwelling infusion lines.

arterial catheter

A catheter inserted into an artery to measure pressure, remove blood, inject medication or radiographic contrast media, or perform an interventional radiological procedure.

balloon catheter

A multi-lumened catheter surrounded by a balloon. The balloon may be expanded by injecting air, saline, or contrast medium.

Bozeman-Fritsch catheter

See: Bozeman-Fritsch catheter

Broviac catheter

Broviac catheter.

cardiac catheter

A long, fine catheter specially designed for passage through the lumen of a blood vessel into the arteries or chambers of the heart.
See: cardiac catheterization

caudal catheter

Caudal anesthesia.

central catheter

A catheter inserted into a central vein or artery for diagnostic or therapeutic purposes.
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CENTRAL VENOUS CATHETER: A tunneled central venous catheter is inserted through subcutaneous tissue in the chest wall into the jugular or subclavian vein
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CENTRAL VENOUS CATHETER (SUBCLAVIAN)

central venous catheter

A catheter inserted into the superior vena cava to permit intermittent or continuous monitoring of central venous pressure, to administer fluids, medications or nutrition, or to facilitate obtaining blood samples for chemical analysis. See: illustration

Patient care

Health care professionals must use caution to prevent life-threatening complications when inserting and maintaining a central line. The subclavian approach to the placement of a central line is preferred, because femoral placements may be complicated by deep venous thrombosis, and internal jugular sites carry an increased risk of infection. Sterile technique is a requirement during insertion. The skin should be prepared with chlorhexidine-gluconate (2%) or povidone-iodine. Ultrasound guidance improves the likelihood of entering the desired vein without injury to neighboring structures. With or without radiological guidance, the best results are obtained by practitioners who perform the procedure frequently. After the catheter is inserted, it should be firmly sewn to the skin to keep it from migrating in and out of the insertion site. An antibiotic impregnated patch covered by a sterile dressing should be placed at the insertion site. The catheter should be manipulated as infrequently as possible during its use. Dressing changes are carried out using sterile technique. IV tubing and solutions and injection caps also should be changed as required by the agency’s protocol. Health care professionals are responsible for preventing, assessing for, and managing central venous therapy complications (e.g., air embolism; cardiac tamponade; chylothorax, hemothorax, hydrothorax, or pneumothorax; local and systemic infections; and thrombosis). Documentation should include preprocedure and postprocedure physical assessment of the patient, catheter type and size, insertion site location, x-ray confirmation of the placement, catheter insertion distance (in centimeters), and the patient’s tolerance of the procedure. Maintenance care procedures also should be fully documented. The site should be carefully inspected for inflammation, and any drainage should be cultured. When catheter-related infections are suspected, the catheter tip provides valuable information about infection sources in cases of sepsis. The tip should be cut off with sterile scissors and dropped directly into a sterile specimen container.

illustration

condom catheter

A specially designed condom that includes a collection tube attached to the distal end. The tubing carries urine to a collecting bag. Its use prevents men with urinary incontinence from soiling clothes or bed linens.

CAUTION!

Continual use of this device may excoriate the skin of the penis.
See: Catheter: External Condom

double-channel catheter

A catheter providing for inflow and outflow.

elbowed catheter

Prostatic catheter.

eustachian catheter

A catheter passed into the eustachian tube through the nasal passages to ventilate the middle ear.

female catheter

A catheter about 5 in (12.7 cm) long, used to pass into a woman's bladder.

Foley catheter

See: Foley catheter

glide catheter

A catheter inserted into the ureter to remove impacted kidney stones. A lubricated wire is advanced past the obstructing stone. The glide catheter is mounted on the wire, moved toward the kidney beyond the stone, and used to snare and retrieve the stone.

guide catheter

A catheter that makes it easier to enter that vessel with other devices or instruments. Guide catheters are used to facilitate the placement of lasers, stents, and balloons for angioplasty.

heparin-bonded catheter

A pulmonary artery catheter with a heparin coating to reduce the risk of thrombus formation.

Hickman catheter

See: Hickman catheter

impregnated catheter

A catheter coated with a medication to prevent complications of prolonged insertion in the body. Commonly used coatings include antibiotics and antiseptics.

indwelling catheter

Any catheter that is allowed to remain in place in a vein, artery, or body cavity.

indwelling pleural catheter

Pleural catheter.

intra-aortic catheter

See: intra-aortic balloon counterpulsation

intrauterine pressure catheter

Abbreviation: IUPC
A catheter inserted into the uterus of a woman during labor, when labor is protracted, arrested, or when the force of uterine contractions are difficult to monitor indirectly.

intravenous catheter

A catheter inserted into a vein to administer fluids or medications or to measure pressure.

Karman catheter

See: Karman catheter

male catheter

A catheter 12 to 13 in (30.5 to 33 cm) long, used to pass into a man's bladder.

pacing catheter

A catheter inserted most commonly into the right side of the heart via the brachial, femoral, internal jugular, or subclavian vein for temporary pacing of the heart. The pacing wires or leads provide the electrical stimulus from an external source (a pulse generator).

peripherally inserted central venous catheter

Abbreviation: PICC, PICC line
A soft, flexible central venous catheter, inserted in a vein in the arm and advanced until the tip is positioned in the axillary, subclavian, or brachiocephalic vein. It may also be advanced into the superior vena cava. A PICC is commonly used for prolonged antibiotic therapy, total parenteral nutrition, continuous opioid infusion, or intermittent chemotherapy.

pharyngeal suction catheter

A rigid catheter used to suction the pharynx during direct visualization. Synonym: Yankauer suction catheter

pleural catheter

A small chest catheter inserted between the parietal and visceral pleura and used to drain recurrent pleural effusions, e.g., in patients with cancer.
Synonym: indwelling pleural catheter

presternal catheter

A catheter used for peritoneal dialysis that exits the chest instead of the lower abdomen. It is made of two silicone rubber tubes joined at the implantation site by a titanium connector that links its abdominal and presternal parts.

prostatic catheter

A catheter, 15 to 16 in (38 to 40.6 cm) long, with a short elbowed tip designed to pass prostatic obstruction. Synonym: elbowed catheter

pulmonary artery catheter

A catheter inserted into the pulmonary artery to measure pulmonary artery pressures, pulmonary capillary wedge pressure, and, indirectly, left atrial pressure and cardiac output.

self-retaining catheter

A bladder catheter designed to remain in place (e.g., a Foley catheter).
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SUPRAPUBIC CATHETER: used to drain urine

suprapubic catheter

A catheter that permits direct urinary drainage from the bladder through the lower abdominal wall from a surgically fashioned opening located just above the pubic symphysis. Suprapubic urinary diversion is typically but not exclusively used as a temporary means of decompressing the bladder when the urethra is obstructed, e.g., in children with congenital deformities of the penis or urethra, or in adults with bladder outlet obstruction. When it is used for this purpose, it is considered a bridge before definitive surgery. See: suprapubic aspiration of urine; illustration

Patient care

The nurse observes for hemorrhage or prolonged hematuria and signs of local or systemic infection. Aseptic technique is used during dressing or equipment changes. Bladder irrigation is performed as prescribed. Medications, e.g., analgesics, antispasmodics, and bowel stimulants, are administered as prescribed. The patient's ability to micturate is evaluated. Intake and output are monitored and recorded. Fluids are forced unless otherwise restricted to ensure passage of dilute urine.

Swan-Ganz catheter

See: Swan-Ganz catheter

Tenckhoff peritoneal catheter

See: Tenckhoff peritoneal catheter

triple-lumen catheter

Abbreviation: TLC
A central catheter containing three separate channels or passageways.

tunneled central venous catheter

An intravenous catheter inserted into the subclavian or internal jugular vein and then advanced into the right atrium or superior vena cava. The proximal end is tunneled subcutaneously from the insertion site and brought out through the skin at an exit site below the nipple line. Commonly used tunneled catheters include the Hickman and Broviac catheters.

umbilical vein catheter

A catheter placed in the umbilical vein of an infant to facilitate administration of medicines parenterally or to do an exchange transfusion.

vertebrated catheter

A catheter in sections to be fitted together so that it is flexible.

winged catheter

A catheter with little flaps at each side of the beak to help retain it in the bladder.

Word catheter

A rubber catheter with an inflatable balloon at its end, used to treat cysts or abscesses, e.g., Bartholin gland cysts in the vulva.

Yankauer suction catheter

See: Yankauer suction catheter

catheter

A flexible plastic tube used to empty hollow organs, especially the urinary bladder, or to gain access to inaccessible parts of the body, especially the blood vessels and the heart. Drainage catheters have not changed much in recent years but there has been a revolution in the design and application of catheters for other purposes such as ANGIOGRAPHY and BALLOON CATHETER treatments. See also CARDIAC CATHETERIZATION and URINARY CATHETERIZATION.

Catheter

A tube made of elastic, elastic web, rubber, glass, metal, or plastic used to evacuate or inject fluids into the body. In cardiac catheterization, a long, fine catheter is used for passage through a blood vessel into the chambers of the heart.

cath·e·ter

(kath'ĕ-tĕr)
A tubular instrument to allow passage of fluid from or into a body cavity or blood vessel.
[G. kathetēr, fr. kathiēmi, to send down]

catheter (kath´ətər),

n a hollow, flexible tube that can be inserted into a vessel or cavity of the body to withdraw or instill fluids.
catheter, balloon-tip,
n a tube with a balloon at its tip that can be inflated or deflated without removal after insertion.
catheter, indwelling,
n a catheter left in place in the bladder; usually a type of balloon catheter.

catheter

a tubular, flexible instrument, passed through body channels for withdrawal of fluids from (or introduction of fluids into) a body cavity.
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Balloon-tipped angiographic (Berman) catheter By permission from Darke P, Kelly DF, Bonagura JD, Color Atlas of Veterinary Cardiology, Mosby, 1995

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.
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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.