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Angioplasty and stent placement - heart

PCI; Percutaneous coronary intervention; Balloon angioplasty; Coronary angioplasty; Coronary artery angioplasty; Percutaneous transluminal coronary angioplasty; Heart artery dilatation; Angina - stent placement; Acute coronary syndrome - stent placement; Coronary artery disease - stent placement; CAD - stent placement; Coronary heart disease - stent placement; ACS - stent placement; Heart attack - stent placement; Myocardial infarction - stent placement; MI - stent placement; Coronary revascularization - stent placement

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.

Description

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 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.

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).

Angioplasty may be used to treat:

  • Blockage in a coronary artery during or after a heart attack
  • 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

Not every blockage can or need 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.

Risks

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
  • 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)
  • Irregular heartbeat (arrhythmias)
  • Stroke (this is rare)

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 drugs you are taking, even drugs 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 drugs 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 Viagra, 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.

Outlook (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.

Open References

References

Amsterdam EA, Wenger NK, Brindis RG, et al. 2014 AHA/ACC guideline for the management of patients with non ST-elevation acute coronary syndromes: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;64(24):e139-e228. PMID: 25260718 pubmed.ncbi.nlm.nih.gov/25260718/.

Fihn SD, Blankenship JC, Alexander KP, et al. 2014 ACC/AHA/AATS/PCNA/SCAI/STS focused update of the guideline for the diagnosis and management of patients with stable ischemic heart disease. Circulation. 2014;130(19):1749-1767. PMID: 25070666 pubmed.ncbi.nlm.nih.gov/25070666/.

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.

Morrow DA, de Lemos JA. 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.

O'Gara PT, Kushner FG, Ascheim DD, et al. 2013 ACCF/AHA guideline for the management of ST-elevation myocardial infarction: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. Circulation. 2013;127(4):529-555. PMID: 23247303 pubmed.ncbi.nlm.nih.gov/23247303/.

  • Balloon angioplasty - short segment

    Animation

    •  

    Balloon angioplasty - short segment - Animation

    Balloon angioplasty is a procedure used to open narrowed or blocked arteries. It uses a balloon attached to a catheter that's inserted into an artery. At the place where deposits of plaque have closed off or narrowed the channel for blood flow, the balloon is inflated. If the blockage is not major, it may be possible to correct the problem by inflating the balloon several times. This will compact the plaque against the wall, widening the passage and letting blood flow through. It's common then, for a tubular device called a stent to be put into the artery. It will act like a scaffold inside the artery and keep the blood vessel open.

  • Stent

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    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.

  • Coronary artery stent

    Coronary artery stent - illustration

    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.

    Coronary artery stent

    illustration

  • Balloon angioplasty - short segment

    Animation

    •  

    Balloon angioplasty - short segment - Animation

    Balloon angioplasty is a procedure used to open narrowed or blocked arteries. It uses a balloon attached to a catheter that's inserted into an artery. At the place where deposits of plaque have closed off or narrowed the channel for blood flow, the balloon is inflated. If the blockage is not major, it may be possible to correct the problem by inflating the balloon several times. This will compact the plaque against the wall, widening the passage and letting blood flow through. It's common then, for a tubular device called a stent to be put into the artery. It will act like a scaffold inside the artery and keep the blood vessel open.

  • Stent

    Animation

    •  

    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.

  • Coronary artery stent

    Coronary artery stent - illustration

    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.

    Coronary artery stent

    illustration

A Closer Look

 

Tests for Angioplasty and stent placement - heart

 
 

Review Date: 10/5/2022

Reviewed By: Thomas S. Metkus, MD, Assistant Professor of Medicine and Surgery, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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