Catheter ablation (ab-LA-shun) is a medical procedure used to treat some types of arrhythmia (ah-RITH-me-ah). An arrhythmia is a problem with the rate or rhythm of the heartbeat.
During catheter ablation, a long, thin, flexible tube is put into a blood vessel in your arm, groin (upper thigh), or neck. This tube is called an ablation catheter. It's guided into your heart through the blood vessel.
A special machine sends energy through the ablation catheter to your heart. The energy destroys small areas of heart tissue where abnormal heartbeats may cause an arrhythmia to start.
Radiofrequency (RF) energy usually is used for catheter ablation. This type of energy uses radio waves to produce heat that destroys the heart tissue. Studies have shown that RF energy is safe and effective.