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Catheter Ablation for a Fast Heart Rate

Catheter ablation is a procedure used to selectively destroy areas of the heart that are causing a heart rhythm problem.

Thin, flexible wires called catheters are inserted into a vein, typically in the groin or neck. They are threaded up through the vein and into the heart. There is an electrode at the tip of each wire. The electrode sends out radio waves that create heat. This heat destroys the heart tissue that causes the fast heart rate. Another option is to use freezing cold to destroy the heart tissue.

Catheter ablation is done in a hospital where the person can be carefully monitored. The procedure is done with an electrophysiology (EP) study, which can identify specific areas of heart tissue where the fast heart rate may start or where abnormal electrical pathways are located inside or outside the atrioventricular (AV) node. This allows doctors to pinpoint exactly what tiny area of heart muscle to destroy.

A local anesthetic is used at the site where the catheter is inserted. The person usually stays awake during the procedure but may be sedated.

What To Expect After Treatment

Recovery from catheter ablation is usually quick. Some people may be hospitalized for 1 to 2 days after the procedure so doctors can monitor heart rate and rhythm. Many people go home the same day.

Why It Is Done

Catheter ablation is often used for people who have persistent or recurrent fast heart rates that do not respond to drug therapy. Or it is used for people who have certain types of fast heart rates and who do not want to take medicine.1, 2

Ablation might be done to treat:

How Well It Works

Catheter ablation can eliminate atrioventricular nodal reciprocating tachycardia (AVNRT), a type of supraventricular tachycardia, in almost all cases.2

This procedure can successfully eliminate WPW most of the time. There is a small risk of the arrhythmia recurring even after successful ablation of WPW. But a second session of catheter ablation is usually successful.2

For ventricular tachycardia, catheter ablation might make the arrhythmia happen less often or stop the arrhythmia from happening again.1

Risks

Catheter ablation is considered safe.

It has some serious risks, but they are rare. They include:

You will have to decide whether the possible benefits of ablation outweigh these risks. Your doctor can help you decide.

In catheter ablation for atrioventricular nodal reentrant tachycardia (AVNRT), damage to the heart's conduction system requires a permanent pacemaker in about 1 out of 100 people.2 With other types of supraventricular tachycardia, where the abnormal cells are not close to the heart's normal conduction system, there is almost no risk of needing a pacemaker.

What To Think About

For help on the decision to have catheter ablation, see:

Supraventricular Tachycardia: Should I Have Catheter Ablation?

Complete the special treatment information form (PDF)(What is a PDF document?) to help you understand this treatment.

Related Information

Citations

  1. Aliot EM, et al. (2009). EHRA/HRS expert consensus on catheter ablation of ventricular arrhythmias. Heart Rhythm, 6(6): 886–933.

  2. Blomström-Lunqvist C, et al. (2003). ACC/AHA/ESC guidelines for the management of patients with supraventricular arrhythmias—Executive summary: A report of the ACC/AHA/ESC Committee for Practice Guidelines. Circulation, 108(15): 1871–1909.

ByHealthwise Staff
Primary Medical ReviewerRakesh K. Pai, MD, FACC - Cardiology, Electrophysiology
Specialist Medical ReviewerJohn M. Miller, MD, FACC - Cardiology, Electrophysiology
Last RevisedAugust 9, 2012

WebMD Medical Reference from Healthwise

Last Updated: August 09, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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