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What Is a Radiofrequency Ablation Catheter?

A radiofrequency ablation catheter is a thin medical device used to deliver radiofrequency energy to targeted tissue. The energy creates heat at the catheter tip or electrode area, which can destroy or modify tissue. In cardiac care, it is used during catheter ablation to treat selected abnormal heart rhythms. Radiofrequency ablation catheters are also used in other specialties for selected tissue-ablation procedures.

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What Is a Radiofrequency Ablation Catheter?

A radiofrequency ablation catheter is a thin medical device used to deliver radiofrequency energy to targeted tissue. The energy creates heat at the catheter tip or electrode area, which can destroy or modify tissue. In cardiac care, it is used during catheter ablation to treat selected abnormal heart rhythms. Radiofrequency ablation catheters are also used in other specialties for selected tissue-ablation procedures.

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What Is a Radiofrequency Ablation Catheter Used For?

A radiofrequency ablation catheter is used when a clinician needs to create controlled lesions in tissue. In electrophysiology, it can treat arrhythmias by targeting heart tissue that triggers or conducts abnormal electrical signals. In pain medicine or other specialties, radiofrequency devices may target nerves or soft tissue depending on the indication. The planned use depends on the catheter design, target tissue, imaging guidance, and patient condition.

How a Radiofrequency Ablation Catheter Works

The catheter is guided to the target area through blood vessels, a needle access path, or another procedural route. Radiofrequency current is delivered through the catheter electrode. The current produces heat in nearby tissue, creating a lesion that interrupts unwanted electrical signals or destroys targeted tissue. Clinicians monitor energy, temperature, impedance, timing, and patient status during ablation.

How Is Radiofrequency Catheter Ablation Done?

The patient receives local anesthesia, sedation, or general anesthesia depending on the procedure. The clinician advances the catheter to the treatment area using imaging, mapping, or endoscopic guidance. Energy is applied in controlled bursts while the team checks catheter position and treatment effect. After the procedure, the access site and the patient’s symptoms, rhythm, pain, or target condition are monitored.

Risks and Follow-Up

Possible risks depend on the treatment site. In cardiac ablation, risks can include bleeding, infection, blood vessel injury, heart perforation, arrhythmia recurrence, blood clots, stroke, or need for a pacemaker in rare cases. In pain or soft-tissue ablation, risks can include burns, nerve injury, bleeding, infection, or incomplete relief. Patients should follow activity limits and report fever, severe pain, chest symptoms, neurologic symptoms, or access-site bleeding.

FAQs About Radiofrequency Ablation Catheters

Does radiofrequency ablation use heat?

Yes. Radiofrequency current creates heat in targeted tissue to form a controlled lesion.

Is a radiofrequency ablation catheter left inside the body?

No. The catheter is removed after the procedure. Any implanted device used separately would depend on the specific treatment plan.

Can radiofrequency ablation treat atrial fibrillation?

Yes, radiofrequency catheter ablation can be used in selected patients with atrial fibrillation or other arrhythmias. The decision depends on symptoms, rhythm type, and specialist evaluation.

Can arrhythmias come back after ablation?

Yes. Some patients need medication, monitoring, or repeat ablation if abnormal rhythms return.

References

Cardiac ablation percutaneous catheter: Product Classification. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?id=LPB. Date Accessed June 16, 2026.

Catheter, percutaneous, cardiac ablation, for treatment of atrial fibrillation: Product Classification. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?id=OAE. Date Accessed June 16, 2026.

Ablation for Arrhythmias. American Heart Association. https://www.heart.org/en/health-topics/arrhythmia/prevention--treatment-of-arrhythmia/ablation-for-arrhythmias. Date Accessed June 16, 2026.

Atrial fibrillation ablation. Mayo Clinic. https://www.mayoclinic.org/tests-procedures/atrial-fibrillation-ablation/about/pac-20384969. Date Accessed June 16, 2026.

Cardiac Ablation: Procedure Details & Recovery. Cleveland Clinic. https://my.clevelandclinic.org/health/treatments/16851-catheter-ablation. Date Accessed June 16, 2026.