Stents
Stents
Stents (/stɛnts/) are small, expandable tubes that play a crucial role in the treatment of blocked arteries. They are typically made of metal mesh and are used to treat narrow or weak arteries.
Etymology
The term "stent" originates from the name of a British dentist, Charles Thomas Stent, known for developing an improved compound for making dental impressions. His name was later adopted in the medical field to refer to tubular supports.
Types of Stents
There are several types of stents, including:
- Coronary stents: These are often used for the treatment of coronary heart disease and are placed in the arteries that supply the heart.
- Drug-eluting stents: These are coated with medication that is slowly released to help prevent the artery from closing again.
- Peripheral stents: They are used to open narrowed blood vessels outside of your coronary arteries, such as those in the brain, kidneys, legs, and neck.
- Prostatic stents: These are used in men to treat urinary problems due to an enlarged prostate.
Procedure
Stents are usually placed in an artery or vein during a procedure called angioplasty. A balloon attached to the end of a catheter is inflated to widen the blocked area, and the stent is then placed to keep the artery open.
Risks and Complications
While stents can significantly improve blood flow and relieve symptoms, they also come with potential risks and complications. These may include blood clots, restenosis (re-narrowing of the artery), and bleeding at the catheter insertion site.
Related Terms
External links
- Medical encyclopedia article on Stents
- Wikipedia's article - Stents
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