Angioplasty and stent placement - heart
Angioplasty is a procedure to open narrowed or blocked blood vessels that supply blood to the heart. These blood vessels are called the coronary arteries.
A coronary artery stent is a small, metal mesh tube that expands inside a coronary artery. A stent is often placed during or immediately after angioplasty. It helps prevent the artery from closing up again. A drug-eluting stent has medicine embedded in it that helps prevent the artery from closing in the long term. These are the most common kind of stent.
Stent
A stent is a tiny tube placed into a hollow structure in your body. This structure can be an artery, a vein, or another structure, such as the tube ...
Read Article Now Book Mark ArticleBalloon angioplasty - short segment - Animation
Angioplasty is a procedure to open narrowed or blocked arteries caused by deposits of plaque. If the blockage is not major, the problem may be corrected by inflating the balloon several times to compact the plaque against the arterial wall, widening the passage for the blood to flow through. Typically, a device called a stent is placed within the coronary artery to keep the vessel open.
Description
Stent - Animation
If you have a blocked artery in your heart, legs, or neck, you may need a stent to keep your blood flowing to prevent serious problems. Let's talk today about stents. A stent is a tiny tube we place in an artery, blood vessel, or other duct (such as the one that carries urine) to hold the tubes open. A stent is left in permanently. Most stents are made of metal or plastic mesh-like material. Stent grafts made of fabric are often used in larger arteries. Stents are used to treat a variety of artery and other problems. Your doctor will make a small cut in a blood vessel in your groin and thread a thin, flexible tube called a catheter to the place in your body where you need a stent. In the heart, a fatty substance called plaque can build up inside the coronary arteries. Plaque narrows the arteries, reducing the flow of oxygen-rich blood to the heart. One stent, called an intraluminal coronary artery stent, is a small, self-expanding, metal mesh-like tube that is placed inside a coronary artery after balloon angiography. This stent prevents the artery from re-closing. Another stent is coated with medicine that helps further prevent an artery from re-closing. In the carotid arteries, which are on both sides of your neck, plaque can build up and slow the flow of blood to your brain. Stents can keep the carotid arteries open. Stents can also open up narrow arteries in your legs caused by peripheral arterial disease. They're also used to treat an abdominal aortic aneurysm, which is when the large blood vessel that supplies blood to your abdomen, pelvis, and legs becomes abnormally large and balloons. After a stent procedure, your doctor will probably recommend that you take aspirin and another anti-clotting medication to prevent blood clots from forming in the stent. Make sure that you talk to your doctor, before getting a stent, about the risks associated with placing a stent to treat your condition, such as tissue growing around the area where the stent was placed.
Before the angioplasty procedure begins, you will receive some pain medicine. You may also be given medicine that relaxes you, and blood-thinning medicines to prevent a blood clot from forming.
You will lie on a padded table. Your doctor (usually a heart specialist called a cardiologist) will insert a flexible tube (catheter) into an artery. Sometimes the catheter will be placed in your arm or wrist, or in your upper leg (groin) area. You will be awake during the procedure.
The doctor will use live x-ray pictures to carefully guide the catheter up into your heart and arteries. Liquid contrast (sometimes called "dye," will be injected into your body to highlight blood flow through the arteries. This helps the doctor see any blockages in the blood vessels that lead to your heart.
A guide wire is moved into and across the blockage. A balloon catheter is pushed over the guide wire and into the blockage. The balloon on the end is blown up (inflated). This opens the blocked vessel and restores proper blood flow to the heart.
A wire mesh tube (stent) may then be placed in this blocked area. The stent is inserted along with the balloon catheter. It expands when the balloon is inflated. The stent is left there to help keep the artery open.
Coronary artery stent
An intraluminal coronary artery stent is a small, self-expanding, stainless steel mesh tube that is placed within a coronary artery to keep the vessel open. It may be used during a coronary artery bypass graft surgery to keep the grafted vessel open, after balloon angioplasty to prevent reclosure of the blood vessel, or during other heart surgeries.
The stent is almost always coated with a drug (called a drug-eluting stent). This type of stent may lower the chance of the artery closing back up in the future.
Why the Procedure Is Performed
Arteries can become narrowed or blocked by deposits called plaque. Plaque is made up of fat and cholesterol that builds up on the inside of artery walls. This condition is called hardening of the arteries (atherosclerosis).
Hardening of the arteries
Atherosclerosis, sometimes called "hardening of the arteries," occurs when fat, cholesterol, and other substances build up in the walls of arteries. ...
Read Article Now Book Mark ArticleAngioplasty may be used to treat:
- Blockage in a coronary artery during or after a heart attack
Heart attack
Most heart attacks are caused by a blood clot that blocks one of the coronary arteries. The coronary arteries bring blood and oxygen to the heart. ...
Read Article Now Book Mark Article - Blockage or narrowing of one or more coronary arteries that may lead to poor heart function (heart failure)
- Narrowings that reduce blood flow and cause persistent chest pain (angina) that medicines do not control
Angina
Angina is a type of chest discomfort or pain due to poor blood flow through the blood vessels (coronary vessels) of the heart muscle (myocardium). T...
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Not every blockage can or needs to be treated with angioplasty. Some people who have several blockages or blockages in certain locations may need coronary bypass surgery. Some blockages are treated with medical therapy rather than an interventional procedure.
Coronary bypass surgery
Heart bypass surgery creates a new route, called a bypass, for blood and oxygen to go around a blockage to reach your heart.
Read Article Now Book Mark ArticleRisks
Angioplasty is generally safe, but ask your doctor about the possible complications. Risks of angioplasty and stent placement are:
- Allergic reaction to the drug used in a drug-eluting stent, the stent material (very rare), or the x-ray dye.
- Bleeding or clotting in the area where the catheter was inserted.
- Blood clot.
Blood clot
Blood clots are clumps that occur when blood hardens from a liquid to a solid. A blood clot that forms inside one of your veins or arteries is calle...
Read Article Now Book Mark Article - Clogging of the inside of the stent (in-stent restenosis). This can be life threatening.
- Damage to a heart valve or blood vessel.
- Heart attack.
- Kidney failure (higher risk in people who already have kidney problems).
Kidney failure
Acute kidney failure is the rapid (less than 2 days) loss of your kidneys' ability to remove waste and help balance fluids and electrolytes in your b...
Read Article Now Book Mark Article - Irregular heartbeat (arrhythmias).
Arrhythmias
An arrhythmia is a disorder of the heart rate (pulse) or heart rhythm. The heart can beat too fast (tachycardia), too slow (bradycardia), or irregul...
Read Article Now Book Mark Article - Stroke (this is rare).
Stroke
A stroke occurs when blood flow to a part of the brain stops. A stroke is sometimes called a "brain attack. " If blood flow is cut off for longer th...
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Before the Procedure
Angioplasty is often performed when you go to the hospital or emergency room for chest pain, or after a heart attack. If you are admitted to the hospital for angioplasty:
- Tell your health care provider what medicines you are taking, even medicines or herbs you bought without a prescription.
- You will most often be asked not to drink or eat anything for 6 to 8 hours before the test.
- Take the mediciness your provider told you to take with a small sip of water.
- Tell your provider if you are allergic to seafood, you have had a bad reaction to contrast material or iodine in the past, you are taking sildenafil (Viagra) or similar medicines, or you are or might be pregnant.
After the Procedure
The average hospital stay is 2 days or less. Some people may not even have to stay overnight in the hospital.
In general, people who have angioplasty are able to walk around within a few hours after the procedure, depending on how the procedure went and where the catheter was placed. Complete recovery takes a week or less. You will be given information how to care for yourself after angioplasty.
How to care for yourself after angiopla...
Angioplasty is a procedure to open narrowed or blocked blood vessels, including those that supply blood to the heart. These blood vessels are called...
Read Article Now Book Mark ArticleOutlook (Prognosis)
For most people, angioplasty greatly improves blood flow through the coronary artery and the heart. It may help you avoid the need for coronary artery bypass surgery (CABG).
Angioplasty does not cure the cause of the blockage in your arteries. Your arteries may become narrow again.
Follow your heart-healthy diet, exercise, stop smoking (if you smoke), and reduce stress to lower your chances of having another blocked artery. Your provider may prescribe medicine to help lower your cholesterol or control your blood pressure. Taking these steps can help reduce your chances of complications from atherosclerosis.
Reviewed By
Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Kumbhani DJ, Bhatt DL. Percutaneous coronary intervention. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 12th ed. Philadelphia, PA: Elsevier; 2022:chap 41.
Lawton, J, Tamis-Holland, JE. et al. 2021 ACC/AHA/SCAI Guideline for coronary artery revascularization: A report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. J Am Coll Cardiol. 2022;79(2):e21–e129. PMID: 34895950 pubmed.ncbi.nlm.nih.gov/34895950/.
Morrow DA, de Lemos J. Stable ischemic heart disease. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 12th ed. Philadelphia, PA: Elsevier; 2022:chap 40.
Virani SS, Newby LK, Arnold SV, et al. 2023 AHA/ACC/ACCP/ASPC/NLA/PCNA guideline for the management of patients with chronic coronary disease: a report of the American Heart Association/American College of Cardiology Joint Committee on Clinical Practice Guidelines. Circulation. 2023;148(9):e9–e119. PMID: 37471501 pubmed.ncbi.nlm.nih.gov/37471501/.