Service
Catheter ablation
Catheter ablation treats abnormal heart rhythms by targeting the heart tissue responsible for the arrhythmia. It can cure, or substantially improve, atrial fibrillation, atrial flutter, supraventricular tachycardia, and some ventricular arrhythmias.
How it works
Fine catheters are passed to the heart through a vein, guided by detailed electrical and anatomical mapping. The precise tissue responsible for the rhythm disturbance is then treated. The approach is tailored to the specific arrhythmia and to your individual anatomy.
What to expect
The procedure is performed under local anaesthetic with sedation, or under general anaesthetic, depending on the case. Most people stay in hospital for the day or a single night, and recovery is usually quick. You will be given clear aftercare advice and a follow-up plan.
Common questions
What is catheter ablation?
Ablation is a procedure that treats abnormal heart rhythms by carefully targeting the small areas of heart tissue responsible. Fine tubes (catheters) are passed to the heart through a vein, usually in the groin, under local anaesthetic or sedation.
Is it a major operation?
No incision or open surgery is involved. Many ablations are performed as a day case or with a single overnight stay, and most people return to normal activities within a few days.
What are the risks?
Ablation is generally safe, but as with any procedure there are risks, which vary by the type of ablation. These are discussed with you in detail before the procedure as part of the consent process.
Related services
Atrial fibrillation
Assessment and treatment of AF, including rhythm control and ablation.
Read morePalpitations & SVT
Investigation of palpitations and supraventricular tachycardia.
Read moreSyncope & blackouts
Structured work-up of fainting, blackouts and unexplained collapse.
Read moreLast reviewed: June 2026. Reviewed by Dr Iain Sim.