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AFib Ablation

AFib ablation is a treatment for people with atrial fibrillation (AFib) symptoms that have not responded to medication. AFib ablation restores a normal heart rhythm by using heat or cold to create small scars in the heart. These scars block electrical signals that cause an abnormal heartbeat.



What Is AFib Ablation?

AFib is caused by abnormal electrical impulse formation in the top chamber of the heart called the atrium. Ablation is used to cause scarring on the inside of the heart to interrupt the electrical signals that cause irregular heartbeats.

Types of AFib ablation

There are several types of ablation procedures that can be performed to treat AFib. The type of AFib ablation you have depends on where your abnormal heartbeat starts. Two common types of ablations for AFib include:

  • AV node ablation — Destroys tissue between the upper and lower chambers of the heart.
  • Pulmonary vein isolation (PVI) — destroys tissue where the pulmonary veins connect to the heart.

AFib ablation procedures are performed using:

  • Radiofrequency electrical energy, which uses heat to destroy heart tissue.
  • Super-cooled nitrous oxide, which uses cold to scar heart tissue.

What is PVI?

The irregular electrical impulses that cause AFib often originate in the pulmonary veins. Your pulmonary veins carry blood from your lungs to your heart. PVI treats these abnormal electrical signals by creating scar tissue near where your pulmonary veins connect to the left atrium of your heart. The scar tissue stops the abnormal electrical signals from traveling from your pulmonary veins to your heart.

Why Would I Need AFib Ablation?

AFib ablation can reduce the symptoms of AFib. If your AFib has is not well controlled with medication or you are having side effects of medications, your doctor may recommend AFib ablation.        

Who’s a candidate for AFib Ablation?

You may be a candidate for AFib ablation if:

  • Medications for AFib have not worked for you.
  • Your AFib symptoms are severe.
  • You are at high risk of stroke or other complications from AFib.
  • You have side effects from AFib medications.

Alternatives to AFib ablation

What Are the Risks and Complications of AFib Ablation?

AFib ablation is a safe and effective procedure when it is performed by an experienced electrophysiologist. However, there are risks associated with any medical procedure. Risks of AFib ablation include:

  • Bleeding or infection at your incision site.
  • Damage to your blood vessels or heart valves.
  • Developing a new abnormal heart rhythm.
  • Having your heart rhythm get worse.
  • Needing an implanted device such as a pacemaker to control heart rhythm.
  • Stroke, blood clots or heart attack.

How serious is atrial fibrillation ablation?

Heart ablation surgery is minimally invasive and serious complications are rare. However, because the procedure involves your heart, it is essential to follow all your doctor’s instructions to reduce the risk of problems.

What are the side effects of a heart ablation?

You may have some mild chest discomfort after your heart ablation procedure. You may also have some soreness around your incision. It is also common to have a mild sore throat if you had a transesophageal echocardiogram (TEE), which uses a probe that is inserted into your throat.

What Should I Expect from AFib Ablation?

Before: How to prepare for AFib ablation

Your doctor will explain the AFib ablation procedure to you and give you a chance to ask questions. To prepare for an AFib ablation procedure, you should:

  • Tell your doctor if you are sensitive or allergic to any medications, iodine, latex, tape, or anesthetic agents (local and general).
  • Tell your doctor about all medications (prescription and over-the-counter) and herbal or other supplements you are taking.
  • Tell your doctor if you have heart valve disease, as you may need to receive an antibiotic before the procedure. 
  • Tell your doctor if you have a history of bleeding disorders or if you are taking any blood-thinning medications, aspirin, or other medications that affect blood clotting. It may be necessary to stop some of the medications prior to the procedure.
  • Fast for a certain time before the procedure. Your doctor will tell you how long to fast (usually overnight).
  • Have any tests that your doctor recommends. For example, your doctor may request a blood test prior to the procedure to determine how long it takes your blood to clot.

On the day of your AFib ablation procedure, be sure to bring your photo ID and health insurance card(s). Leave valuables such as cash and jewelry at home.

You will stay in the hospital overnight after your procedure. You should bring toiletries, a robe, slippers, a cell phone and charger, medications, and a change of clothes. You should also arrange for someone to drive you home after you are discharged from the hospital.

How long does AFib ablation take?

AFib ablation usually takes 3-4 hours. You will stay in the hospital overnight after your procedure.

During your AFib ablation

A specially trained doctor called an electrophysiologist performs the procedure in an electrophysiology lab.

You will be given general anesthesia so you are comfortable and remain still for the procedure. Specially designed catheters will be inserted into your veins, usually in your groin, and guided through your body to the upper left chamber of your heart.

The catheters record the electrical activity of your heart and create scar tissue in the appropriate area. Other procedures, such as electrical cardioversion and defibrillation, may be done at the same time.

Recovery after AFib ablation

After your procedure, the catheters will be removed. Your medical team will need to monitor your blood pressure and check the insertion site frequently, so you will stay in hospital overnight. It is very important that you follow your discharge instructions.

You may be instructed not to drive for a certain amount of time after the procedure.

What is the recovery time for an AFib ablation?

Talk to your doctor about when you can resume normal activities or return to work. The small incision will heal itself in one week. You should see your doctor for follow-up visits as recommended. 

How long is bed rest after ablation?

As you recover from general anesthesia, you must remain lying down for 4-6 hours and refrain from moving the limb where the catheter was inserted.

When to call your doctor about complications

You should call your doctor if you are experiencing any unusual symptoms, including:

  • A fever of more than 100.0°F.
  • Burning or pain in your chest.
  • Difficulty breathing.
  • Difficulty swallowing, throat pain, or bloody cough.
  • New or increasing shortness of breath.
  • Pain, redness, bleeding, drainage, or increased swelling at the insertion site.
  • Rapid or pounding heartbeat.
  • Redness or rash on your chest or back.
  • Severe pain, coldness, numbness, or discoloration in the limb where the catheter was inserted.

If any of these symptoms are severe, you should dial 911 immediately.

What’s the prognosis of AFib ablation?

Most people’s heart rhythm returns to normal after AFib ablation. However, some people may still need to take their heart rhythm medications. A small number of people may need to have another AFib ablation procedure in the future if their abnormal heart rhythm returns.

What’s the success rate of AFib ablation?

AFib ablation, including PVI, has a success rate of up to 90 percent, depending on the type of ablation you have. Your doctor will discuss potential success rates with you before your procedure.

Why Choose UPMC for AFib Ablation?

UPMC specialists perform hundreds of AFib ablation and PVI procedures each year using the latest technology and techniques. If you require additional cardiovascular care, the specialists at UPMC have the skills and experience needed to perform advanced cardiovascular procedures and offer you the latest treatment options.


Last reviewed by a UPMC medical professional on 2024-10-01.