Stents are metallic mesh coils that are used to open the narrowed or blocked passageways in the body. There are different types of stents used for varied purposes.
They have revolutionized the treatment of coronary heart diseases and many other medical conditions involving the blockage of passageways by minimizing the invasive treatment for the conditions that once required surgery.
Stents may be used to open up the narrowed coronary arteries that supply the heart, cerebral arteries that supply the brain, or renal arteries supplying the kidneys. They are available in varied sizes depending upon the size of the blood vessel.
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Drug-eluting Stents versus bare-metal Stents
Some stents are coated with medicines that minimize the formation of scar tissue inside the stents. These are called drug-eluting stents and have less rate of restenosis.
The stents that don’t have such medicine coating are called bare-metal stents. They have a higher risk of restenosis
The stents that don’t have such medicine coating are called bare-metal stents. They have a higher risk of restenosis.
How are Stents placed at the site of blockage?
Different procedures are used to place the stents at the site of blockage depending upon the type of stents and blocked passagewayTo place stents in a blood vessel, angioplasty is performed. It involves the insertion of a stent with the help of a balloon catheter.The person may be advised to take anticoagulants before the procedure. You may need to take off some clothing & jewelry and wear a gown before the procedure. During this procedure:
You will lie on the table, and a health line is inserted to inject required fluids or medicine.
Local anesthesia is injected at the site of the injection of the catheter. The catheter is inserted at the arm or groin region.
The catheter is guided to the site of blockage with the help of radiographic techniques. You will also get proper pain management to keep you relaxed during the procedure.
When the catheter reaches the blocked vessel, a contrast dye is injected that helps to take angiograms.
After reaching the exact point of blockage, the balloon present at the tip of the catheter is inflated to wide open the vessel.
The stent is placed at the position after opening the vessel.
The catheter is removed, and the insertion site is closed by sutures or applying the pressure manually.
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