Cardiac Ablation

Electrophysiology: Cardiac Ablation

What is ablation?

Ablation is a procedure for treatment of abnormal heart rhythms. It is done to block abnormal electrical pathways in the heart. This helps stop abnormal heart rhythms. This procedure most often uses radio waves for the ablation and is called radiofrequency ablation. Another common term is cardiac ablation.


When is it done?

Ablation may be done when abnormal pathways in the heart carry electrical signals that cause the heart to beat too fast. Drugs may be used to treat abnormal heartbeats. However, for some people, the drugs don’t work well or are not the best way to treat the problem. It may be better to block the part of the heart’s electrical system that has an abnormal pathway. Ablation may successfully treat the problem, and medicine may no longer be needed.


What happens during the procedure?

You will be given medicine to keep you from feeling pain during the procedure. Usually a local anesthetic is given to numb the area where the catheter is inserted, along with medicine to help you relax. Sometimes a general anesthetic is used. The general anesthetic will put you in a deep sleep.


A catheter, which is a small tube, will be put through a vein in your groin. X-rays will be used to guide the tip of the catheter to the right place in your heart. Your healthcare provider will use the catheter to record electrical signals in your heart and to find the area in the heart that is causing the problem. The tip of the catheter will be aimed at the abnormal area and energy will be sent from the catheter tip to that part of your heart.

Your heart will form a small scar in this area, and the scar will keep the abnormal path from being used again.


Your provider will check the electrical activity in your heart again before removing the catheter. The procedure may last several hours.


What happens after the procedure?

You will go back to your hospital room and rest in bed for a few hours. You will most likely be able to go home the next day. In some cases, you may be able to go home the day you have the procedure. You can usually go back to your normal activities within a day or two. Your healthcare provider may ask you to avoid some activities, such as heavy lifting, for a short period of time.


Some people do not need further treatment after the ablation. Sometimes the heart rhythm problem comes back and the ablation may need to be done again.


What are the benefits of the procedure?

Ablation treatment destroys abnormal electrical pathways in the heart. This can help you have normal heart rhythms again.


What are the risks of the procedure?


  • There are some risks with this procedure.
  • The catheter may cause bleeding where it is put into the vein.
  • The catheter might hurt the heart muscle or esophagus.
  • Ablation sometimes destroys more heart tissue than intended and causes another heart rhythm problem called a block. If you develop a block, you may need to have a pacemaker implanted in your chest.
  • Blood clots may break off and cause a stroke.
  • Sometimes the ablation is done near the lungs and may cause breathing problems or coughing up blood.


Ask your healthcare provider how these risks may apply to you.