stent


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Related to stent: angioplasty

stent

 [stent]
1. a mold for keeping a skin graft in place, made of Stent's mass or some acrylic or dental compound.
2. by extension, a device or mold of a suitable material used to provide support for tubular structures that are being anastomosed. Intravascular stents maintain patency by scaffolding a vessel wall, thus preserving optimal blood flow. Today, they are being used to treat not only coronary artery disease but also problems in the peripheral vascular system, bile ducts and biliary tree, kidney, urinary tract, trachea, and bronchi. A stent is delivered by an angioplasty balloon; when expanded, it forms a fretwork within the lumen and endothelializes over time. Patients receiving endovascular stents are kept on anticoagulants while in the hospital and usually for one to three months after discharge.
Expanded intraluminal stent within a vessel. From Dorland's, 2000.

Stent

(stent),
Charles R., 19th-century English dentist. See: stent, Stent graft.

stent

(stent),
1. A thread, rod, or catheter, lying within the lumen of a tubular structure, used to provide support during or after repair or anastomosis, or to ensure patency of an intact but contracted lumen.
2. The process of placing a stent.
3. Device used to maintain a bodily orifice or cavity during skin grafting.
4. To immobilize a skin graft after placement.

stent

(stĕnt)
n.
1. A device used to support a bodily orifice or cavity during skin grafting or to immobilize a skin graft following placement.
2. A short tubular device made of wire mesh or fabric that is placed permanently in an anatomical passage, usually an artery during angioplasty, to keep it open after occlusion.

stent

Cardiology Intracoronary stent An expansile tube positioned in a blood vessel, especially a stenosed coronary artery, to ↑ its diameter, ergo blood flow to the myocardium; stenting of obstructed CABGs results in superior outcomes, larger gain in luminal diameter, ↓ major cardiac events. See Coronary artery bypass graft, Coronary stent, Endovascular stent, Endovascular stent-graft, Harrel Y stent, Horizon temporary stent, INR stent. Cf Balloon angioplasty Medtalk A synthetic tube placed in a tubular structure and intended to maintain that structure's open state. See Biliary stent.

stent

(stent)
1. Device used to maintain a bodily orifice or cavity during skin grafting, or to immobilize a skin graft after placement.
2. Slender thread, rod, or catheter, lying within the lumen of tubular structures, used to provide support during or after their anastomosis, or to assure patency of an intact but contracted lumen.
[C. Stent]

stent

(stent)
[Charles Thomas Stent, Brit. dentist, 1845–1901]
1. Originally, a compound used in making dental molds.
2. Any material or device used to hold tissue in place, to maintain open blood vessels, or to provide a support for a graft or anastomosis while healing is taking place.

airway stent

A tube or catheter used as a scaffold to keep an airway open. It is used, e.g., to maintain the patency of a trachea or bronchus that has collapsed as a result of compression by neighboring tissues.

bare metal stent

A vascular stent made of stainless steel or related materials. It is designed to hold an artery open with simple mechanical support. See: drug-eluting stent

covered stent

A stent whose supportive lattice is coated with biocompatible fabric or plastic, e.g., Dacron, polytetrafluoroethylene, or silicone.

drug-eluting stent

Abbreviation: DES
A stent coated with medications that it releases into surrounding intimal cells. It is designed to keep the lumen of an artery from closing both by holding the artery open and by retarding the growth of the vascular endothelium into the stent. See: bare metal stent

endoluminal stent

A stent placed inside a tubular structure or organ.

endovascular stent

A stent placed inside an artery or a vein.

esophageal stent

A tube inserted into the esophagus to open a stricture.
Enlarge picture
INSERTION OF A CORONARY ARTERY STENT: (A) A balloon catheter with a collapsed stent is advanced to the location of a coronary artery lesion. (B) The balloon is inflated, which expands the stent and compresses the lesion to increase the artery opening. (C) The balloon is then deflated and removed, leaving the expanded stent in place to prevent the artery from closing.
Enlarge picture
INSERTION OF A CORONARY ARTERY STENT: (A) A balloon catheter with a collapsed stent is advanced to the location of a coronary artery lesion. (B) The balloon is inflated, which expands the stent and compresses the lesion to increase the artery opening. (C) The balloon is then deflated and removed, leaving the expanded stent in place to prevent the artery from closing.
Enlarge picture
INSERTION OF A CORONARY ARTERY STENT: (A) A balloon catheter with a collapsed stent is advanced to the location of a coronary artery lesion. (B) The balloon is inflated, which expands the stent and compresses the lesion to increase the artery opening. (C) The balloon is then deflated and removed, leaving the expanded stent in place to prevent the artery from closing.

intraluminal coronary artery stent

A stent made of an inert material, usually metallic, with a self-expanding mesh introduced into the coronary artery. It is used to prevent lumen closure (restenosis) following bypass surgery and to treat acute vessel closure after angioplasty.
See: illustration

self-expanding stent

A stent that opens on its own after it is deployed to the lumen it is intended to occupy, e.g., a blood vessel, tube, or organ.

short stent

Spot stent.

spot stent

A stent that is deployed across a focal, severe obstruction in a lumen rather than across a longer but less extensively diseased portion it.
Synonym: short stent

urologic stent

A biologically compatible stent inserted into the ureter or urethra to relieve or prevent urinary tract obstruction. Such stents are commonly placed in the urinary tract after endoureterotomy and endopyelotomy.

stent

See STENTING.

Stent

An expandable "scaffold-like" device, usually constructed of a stainless steel material, that is inserted into an artery to expand the inside passage and improve blood flow.

stent

(stent)
1. Device used to maintain a bodily orifice or cavity during skin grafting, or to immobilize a skin graft after placement.
2. Slender thread, rod, or catheter, lying within the lumen of tubular structures, used to provide support during or after their anastomosis, or to ensure patency of an intact but contracted lumen.
[C. Stent]

Patient discussion about stent

Q. How long can a person lives after having stents put into their heart?

A. I had 2 stents inserted in 1997. I'm still alive. No problems.

Q. I still have chest pain after 5 angioplasties/stents. Does anybody else still have that much angina?

A. my uncle had the same problem. went through several catheterization at several different cardiologist (some are well known), but couldn't get this annoying pain off his chest. the weird part was that it didn't even reacted to effort. but eventually (i don't remember the stent amount) one of the cardiologist solved the problem. so don't give up and continue searching the cause!

More discussions about stent
References in periodicals archive ?
Balloon, forceps (Olympus FG-49L), snare, Dormia basket and Soehendra stent retriever had been the main methods of stent retrieval in both dilated and non-dilated CBD, and had been used at the discretion of the endoscopist concerned.
It has been showed that bacteria obtained from indwelling DJ stents were more resistant to antibiotics than those isolated from urine before stent insertion.
* In the setting of a venous compression syndrome use of balloon-expandable stents may result in stent collapse/compression.
'The National University of Sciences and Technology (Nust) has been working on manufacturing stents. Although the stents have been prepared they are in the testing process, and hopefully production will be started by the end of the year.
CXR was done in case of suspected stent migration and CT Scan was performed only if there was suspicion of re-coarctation or aneurysm on TTE.
It was observed that hospitals' administration in connivance with suppliers and manufacturers used unregistered cardiac stents and sold at an exorbitant price of 250,000 each.
In January last year, the CJP took notice of stent fraud following reports that some hospitals in Lahore were either unnecessarily placing stents in cardiac patients or charging patients up to Rs180,000 for each stent, which actually costs not more than a few thousand rupees.
These factors are all related to abnormal forces placed on the stent, creating metal fatigue and eventual fracture.
Out of 102 patients who received no stent or stenting prior to procedure, 7 patients had post procedure UTI.
He said that 'Stent life' is a frequent concern for patients who write to us wondering how long a stent will last, and how to prolong the value of a stent.