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Coronary Stenting

  • Amy Scholten, MPH
Publication Type:


Coronary Stenting

Animation Movie Available What is a Stent?


Coronary stenting is a way to open a blocked artery in the heart. During an angioplasty a mesh metal tube is placed in the artery. The tube is called a stent.

There are 2 types:

  • Drug eluting—Coated with medicine that is slowly released. The medicine lowers the risk of another block in the same place.
  • Bare metal—Has no medicine.
Coronary Artery: Stent Procedure

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Reasons for Procedure

Coronary stenting is done to restore proper blood flow to the heart. It may help reduce chest pain. Activities may become easier.

Possible Complications

Problems are rare, but all procedures have some risk. The doctor will go over some problems that could happen, such as:

  • Bleeding
  • Damage to the artery wall
  • Heart attack, stroke, or abnormal heart beats known as arrhythmias
  • Reaction to the x-ray contrast dye
  • Blood clots
  • Infection

Things that may raise the risk of problems are:

What to Expect

Prior to Procedure

The care team may meet with you to talk about:

  • Anesthesia options
  • Any allergies you may have
  • Current medicines, herbs, and supplements that you take and whether you need to stop taking them before the procedure
  • Fasting before the procedure, such as avoiding food or drink after midnight the night before
  • Whether you need a ride to and from the procedure
  • Tests that will need to be done before the procedure


The doctor will give a local anesthetic—the insertion site will be numbed. Medicine will help you relax.

Description of Procedure

A needle is placed into a blood vessel in the groin or arm. A wire is passed through the needle and into the blood vessel. The wire is then threaded to the blockage. A soft, flexible tube is slipped over the wire and threaded up to this point.

The doctor uses x-rays to see where the wire and tube are. Contrast dye is injected through the tube and into the arteries of the heart. This makes the blockage easier to see

There is a small balloon at the tip of the tube. It will be quickly inflated and deflated. This will stretch the blocked artery open.

A flattened stent will be placed in the artery. The balloon is inflated again to open the stent to its full size. The stent will stay in place to hold the vessel walls open. The balloon, catheter, and wire will then be removed. A bandage will be placed over the site.

How Long Will It Take?

30 minutes to 3 hours

Will It Hurt?

There may be some discomfort when:

  • The catheter is moved around or replaced
  • The contrast dye is injected—a flushing feeling or nausea
  • The balloon is inflated

Average Hospital Stay

Some people can go home the same day. Others may need to stay a day or two.

Post-procedure Care

At Home

Recovery may take a few days to a week. A heart healthy diet and other lifestyle changes may be advised.

Problems To Look Out For

Call your doctor if you are not getting better or you have:

  • Fever or chills
  • Redness, swelling, pain, excess bleeding, or discharge from the insertion site

Call for medical help right away for:

  • Face drooping
  • Changes in vision or speech
  • Problems walking or using arms
  • Numbness, coldness, or change in color in the affected leg or arm
  • Extreme sweating, nausea, or vomiting
  • Lightheadedness, weakness, or fainting
  • Chest pain or fast, uneven heartbeats
  • Coughing or breathing problems

If you think you have an emergency, call for medical help right away.





  • Angioplasty and stent placement for the heart. Johns Hopkins Medicine website. Available at:
  • McKavanagh, P., Zawadowski, G., et al. The evolution of coronary stents. Expert Rev Cardiovasc Ther, 2018; 16 (3): 219-228.
  • Revascularization for coronary artery disease (CAD). EBSCO DynaMed website. Available at:
  • Stenting during percutaneous coronary intervention (PCI). EBSCO DynaMed website. Available at:
  • What are stents? National Heart, Lung, and Blood Institute website. Available at:
Last Updated:

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.