Catheter Ablation for Abnormal Heart Rhythms
Catheter ablation is a minimally invasive cardiac procedure used to treat certain abnormal heart rhythms, also known as arrhythmias. It is commonly used for conditions such as atrial fibrillation (AFib), atrial flutter, supraventricular tachycardia (SVT), and selected other rhythm disorders.
During the procedure, a cardiologist or cardiac electrophysiologist guides thin, flexible catheters through a blood vessel, usually from the groin, to the heart. Specialized sensors help identify the electrical signals responsible for the abnormal rhythm. The doctor then applies controlled energy to the targeted area to create small areas of scar tissue that block faulty electrical signals. Depending on the condition, radiofrequency energy (heat) or cryoablation (cold) may be used.
When Is Catheter Ablation Recommended?
Catheter ablation may be considered when abnormal heart rhythms cause troublesome symptoms, when medicines do not adequately control the rhythm, or when ablation is considered an appropriate first treatment for a particular arrhythmia. The decision depends on the type of arrhythmia, symptoms, overall heart health, previous treatments, and individual risk factors.
For atrial fibrillation, a commonly performed approach is pulmonary vein isolation, which targets abnormal electrical signals around the pulmonary veins. The goal is to reduce episodes of irregular heart rhythm and improve symptoms and quality of life. However, arrhythmias can sometimes return after treatment, and some patients may require further treatment or continued medication.
What Happens During the Procedure?
Before catheter ablation, the medical team evaluates your heart rhythm and overall health and provides instructions about medicines, eating, drinking, and other preparation requirements.
During the procedure, catheters are carefully guided through a blood vessel to the heart. An electrophysiology study and cardiac mapping can help the specialist locate the source of the abnormal electrical activity. The appropriate ablation technique is then used to treat the targeted tissue.
The duration of the procedure varies depending on the type and complexity of the arrhythmia. Afterward, you are monitored in a recovery area, and depending on your condition and the procedure performed, you may be able to return home the same day or stay overnight.
Benefits of Catheter Ablation
Catheter ablation can help control certain abnormal heart rhythms and may reduce symptoms such as palpitations, rapid heartbeat, fatigue, dizziness, and shortness of breath when these symptoms are caused by the treated arrhythmia. Many patients experience improved quality of life following successful cardiac ablation, although results vary from person to person.
Risks and Recovery
Like any medical procedure, catheter ablation has potential risks. These may include bleeding or infection at the catheter insertion site, blood-vessel injury, recurrent arrhythmia, blood clots, stroke, heart attack, or other complications depending on the type of ablation performed. Your cardiologist or electrophysiologist will explain the potential benefits and risks before treatment.
Recovery recommendations vary according to the procedure and your individual health. Follow-up appointments are important to assess your heart rhythm, symptoms, medications, and long-term response to treatment.
If you have been diagnosed with an irregular heartbeat or are experiencing recurrent palpitations, speak with a qualified cardiologist or cardiac electrophysiologist to determine whether catheter ablation is appropriate for you.