Indications and counter-indications for cardiac stents

Stents are small tubes that are placed inside arteries or ducts to keep them open once they have become compromised. There are a variety of stents that are designed for different procedures and applications. Some of the procedures include the use of coronary, esophageal, ureteral and biliary stents. The majority of these are made from stainless steel mesh and plastic; however, there are other stents that act as grafts and these are made from a special fabric. There are a number of common stent side effects that can occur, and these could include blood clotting, calcification, bleeding and pain.

There are two types of stents that are typically used: bare mesh stents and stents that have been coated with a medication. These are referred to as drug-eluting stents and serve to prevent arteries from reclosing. These devices are generally effective and save lives; however, there are instances when patients can experience negative outcomes. Clinical trials involving wire mesh stents into the brain arteries discovered that the stents caused strokes in patients. Stent side effects when performing procedures for coronary artery blockage can sometimes cause chest pain, swelling of the arms or legs, and bleeding from the insertion site at the groin.

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Patients experiencing stent side effects from devices coated with medication sometimes present with blood clots, and in some cases allergic reactions to the stent itself. This is usually treated with drugs; however, scarring at the site of the stent can be a common side effect. Drug-eluting stents can also cause gastrointestinal bleeding, flu-like symptoms, chest pain and strokes.

Studies have shown that these symptoms and effects can also occur in bare mesh stents yet seem to be more pronounced in the medicated devices.

Although not as common, other stent side effects can include lung disease and even cancer.

Yahoo Answers

A few days ago I answered the same question about Coronary Artery Bypass Graft (CABG) surgery. The indications are essentially the same.

Stents are used to open blockages in a tubule structure. They are most commonly known for their use in the coronary arteries but may be used in other areas as well. In the arteries they are used to spread the artery open where a blockage or narrowing has occurred. Some patients are served well by stents but others require CABG. The decision is normally made by the cardiologist. Stenting or CABG is determined by the number of blockages, the severity and their location(s). Normally, you go in for a catheterization.

If blockages are found and stents are needed, it will normally be done at that time. If CABG is required, they will complete the catheterization then arrangements will be made to perform the CABG.

To see the question on CABG and my and others answers click this link:

http://answers.yahoo.com/question/index;...

For information on stents click this link:

http://www.nhlbi.nih.gov/health/dci/Dise...

For information on CABG click this link:

http://www.nhlbi.nih.gov/health/dci/Dise...

There are a ton of other information sources. If you would like more just contact me by going to my profile. There you can click on "Email Terry S" or click the link below.

http://answers.yahoo.com/my/message_do?kid=AA10902014

Terry

gangadharan nair

The main purpose of a stent is to counteract significant decreases in vessel or duct diameter by acutely propping open the conduit by a mechanical scaffold or stent. Stents are often used to alleviate diminished blood flow to organs and extremities beyond an obstruction in order to maintain an adequate delivery of oxygenated blood. Although the most common use of stents is in coronary arteries, they are widely used in other natural body conduits, such as central and peripheral arteries and veins, bile ducts, esophagus, colon, trachea or large bronchi, ureters, and urethra.(Wikipedia)

Most of the time, stents are used to treat conditions that result when arteries become narrow or blocked. The devices are also used to unblock and keep open other tube-shaped structures in the body, including the ureters (the tubes that drain urine from the kidneys to the bladder) and bronchi (the small windpipes in the lungs).
Stents are commonly used to treat coronary heart disease (CHD). If you have coronary artery disease that does not cause symptoms, you can be treated with either medicine or angioplasty with stenting. Recent studies show that medicine and angioplasty with stenting have equal benefits. Angioplasty with stenting does not help you live longer, but it can reduce angina or other symptoms of coronary artery disease.

Angioplasty with stenting, however, can be a life-saving procedure if you are having a heart attack

Other reasons to use stents include:

* Keeping open a blocked or damage ureter
* Treatment of aneurysms, including thoracic aortic aneurysms
* Unblocking a large artery, such as the carotid artery (carotid endarterectomy)
* To keep bile flowing in blocked bile ducts (biliary stricture)
* Helping you breathe if you have a blockage in the airways

Dr Frank

Stents are inserted routinely now at angioplasty to improve the chances of keeping the vessel open. They would be used for any lesion where the vessel is wide enough to take them. Since the routine use of better anti platelet drugs, clopidogrel, the risk that the stent itself will clot has been reduced dramatically.

Source(s):
GP for more years than I care to remember
Dr Frank · 9 years ago

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Indications and counter-indications for cardiac stents

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