Types Of Coronary Stents and Its Uses
What is a stent?
Stents are small expandable mesh or tubes placed in narrowed or weakened arteries in the body. Patients who have coronary artery disease (CAD), stents help to clear blockages or opens narrowed arteries. It also reduces symptoms like chest pain (angina) and prevents the occurrence of a heart attack.
These types of stents are usually called as heart stents and also referred to as cardiac or coronary stents. Typically, they are metal mesh. The procedure of heart stent implantation in the narrowed coronary arteries (CA) is called percutaneous coronary intervention (PCI) or angioplasty. Stents even prevent the artery from blocking again(restenosis) in the future.
Types Of Coronary Stents
Currently, there are three types of stents available and commonly called heart stents or cardiac or coronary stents. They are implanted in the narrowed coronary arteries through a procedure called angioplasty or PCI.
- Drug-Eluting Stent (DES)
- Bioresorbable Vascular Scaffold (BVS)
- Bare Metal Stent (BMS)
Drug-Eluting Stents (DES) is a peripheral or coronary stent. It is coated with medication which is eluted(released) during the process to prevent the growth of scar tissue in the lining of the artery. This helps the damaged artery to remain smooth and open. It ensures a good blood flow and reduces the risk of re-narrowing or restenosis of the artery.
Due to its slow healing process and risk of stent thrombosis patients implanted with DES stent should follow their doctor’s instructions strictly on drug therapy (DAPT) which helps to reduce the risk of blood clots (stent thrombosis).
Some Heart Association recommends DAPT therapy at least 12 months after DES implantation.
Bioresorbable Vascular Scaffold
BVS – Bioresorbable Vascular Scaffold is the advancement of BRS(Bioresorbable Scaffold), which is a popular drug-eluting type of Stent. It is approved by the FDA, and widely popular scaffold which disappears after the job is done as the body absorbs it over time.
Like DES stents, BVS is also coated with a drug which releases from a polymer that disappears after the work is done. It reduces the risk of re-narrowing (restenosis) the artery again. The scaffold itself is dissolved over time. (BRS) were invented to overcome the barriers of metallic stents like vessel caging.
Bare Metal Stent
Bare metal stents are made of stainless steel and don’t have any special coating. They act as a frame to prop open the blocked blood vessels after they are widened with the procedure of angioplasty. The tissue grows around the Stent in the healing process of the artery and holds it in place. However, in some cases, overgrowth of scar tissue in the lining of the artery increases the risk of blocking the artery again.
However, in some cases, patients who had undergone angioplasty without a stent, the opened artery may begin to narrow again within months after the procedure. As we discussed above, this re-narrowing of the artery is called restenosis and stents can help to prevent this. We, at Sunshine Hospitals, provide all the above-mentioned varieties. They help to prevent the blood vessel from restenosis. For more information, contact our best heart specialists in Hyderabad at Sunshine Hospitals.
About The Doctor: Dr. Sanjeev Kumar – MBBS, MD(General Medicine), DM(Cardiology) – 7995916038
Dr. Sanjeev Kumar, Senior Interventional Cardiologist at Sunshine Hospitals, Gachibowli, having 9 years of experience in interventional cardiology services. He is one of the dedicated Cardiologist in Hyderabad and specialist in coronary & paediatric interventions. He is a gold medalist in both Madras Medical College & MlN Medical College, Allahabad. He performed more than 2000 cardiac procedures across the Sunshine group of hospitals.
He is a profound speaker as he delivered his valuable speech in various national & international conferences. Dr. Sanjeev Kumar is the only cardiologist doing venous interventions for CKD patients in Hyderabad. Over the last 4 years, he successfully performed more than 900 primary PCI stenting. He has 99percent success rate and he maintains an excellent rapport with patients and attendants.
About Sunshine Hospitals:
A Multi Super Speciality Institution, 500 bedded Sunshine Hospitals (Paradise Circle, Secunderabad) is promoted by globally reputed Joint Replacement Surgeon Dr AV Gurava Reddy (Orthopedic Doctor) and like-minded associates who share the objective of making world-standard healthcare available, affordable and accessible to the common man. Sunshine has now become one of the best hospitals for many treatments including Orthopedic, Gastroenterology, Cardiology, Trauma and Neurology.