Ablation of arrhythmia

Ablation of arrhythmia is a treatment for irregular heartbeats. The process uses heat or cold to stop tiny areas in the heart that are sending the wrong signals. This can help your heart beat more steadily and reduce symptoms such as fluttering, dizziness or shortness of breath.

Why ablation might be needed

Arrhythmias happen when your heart’s electrical signals don’t work properly. These electrical signals travel through your heart muscle and control how and when it contracts and relaxes. When these electrical signals are not working properly, your heart can beat too fast, too slow or irregularly.

Some arrhythmias are mild and may only cause occasional discomfort. Others, particularly those originating in the lower chambers of the heart (ventricles), can be more serious and, in rare cases, life-threatening.

Cardiac ablation for arrhythmia may be offered when medication isn’t enough to control your arrhythmia or isn’t suitable for you. It’s often used for atrial fibrillation, one of the most common irregular heartbeats, and can help your heart return to a steadier rhythm, easing symptoms and improving your day-to-day wellbeing.

While the NHS provides excellent care, waiting times for specialist consultation can be longer unless symptoms are severe. With private care, you may be referred quickly to a consultant and seen within days.

At Spire Healthcare, you’ll be cared for by an experienced, multi-disciplinary team in modern facilities, helping you feel supported and reassured throughout your treatment.

Common symptoms of arrhythmia

• Chest pain or tightness
• Dizziness or feeling lightheaded
• Fainting
• Fatigue or unusual tiredness
• Palpitations — feeling your heart thumping, racing or skipping beats

These symptoms are your body’s way of signalling that your heart needs attention. Even mild symptoms should be checked by a doctor, as arrhythmias can vary in severity.

What are the benefits of heart ablation?

Cardiac ablation aims to restore a normal heart rhythm and reduce or stop irregular heartbeats. The procedure can help:

• Improve day-to-day energy levels and quality of life
• Lower the risk of complications associated with certain arrhythmias, such as stroke or heart failure
• Reduce or eliminate symptoms such as palpitations, dizziness, fatigue, and fainting
• Reduce the need for long-term medication in some cases

While outcomes vary depending on the type of arrhythmia and your overall health, most patients notice significant improvement in their symptoms and wellbeing after the procedure.

Is cardiac ablation surgery right for you?

It’s normal to feel anxious if you’ve been told your heartbeat is irregular. While some arrhythmias are mild, others can affect your daily life or increase the risk of complications.

Cardiac ablation may be considered if medications haven’t fully controlled your arrhythmia, cause significant side effects, or if you have a type of irregular heartbeat known to respond well to this treatment, such as Wolff-Parkinson White syndrome (this causes a very fast heartbeat). Your cardiologist may also recommend ablation if your heart rhythm puts you at a higher risk of serious complications.

During your consultation, your cardiologist will carefully review your symptoms, heart test results and overall health. They’ll explain how ablation works, the potential benefits and risks, and what recovery will involve. You’ll also have a highly experienced team supporting you throughout the process, helping you feel informed, reassured, and confident in any decisions about your care.

When surgery may not be the best option

Ablation for arrhythmia isn’t suitable for everyone. Your cardiologist may advise against it in certain situations, such as:

• The potential benefits don’t outweigh the risks
• You are very frail or your general health makes surgery unsafe
• You have other serious health conditions that increase surgical risk

In some cases, medications or other non-surgical treatments may be safer and just as effective. Your healthcare team will review your individual situation carefully and help you choose the approach that’s safest for your heart and overall health.

During the procedure, you will be given anaesthesia so you remain comfortable and pain-free. Your consultant will gently guide thin, flexible tubes called catheters into a blood vessel in your groin or neck and thread them up to your heart.

Some catheters have sensors that map your heart’s electrical activity, helping the team identify the areas causing your irregular heartbeat. Once these areas are located, a catheter delivers targeted energy — either heat (radiofrequency) or cold (cryoablation) — to create tiny, precise scars. These scars block the abnormal electrical signals and help your heart regain a steadier, more regular rhythm.

The procedure usually takes 3–6 hours.

Ablation and pacemakers

In some cases, the procedure can affect part of your heart’s natural electrical system. If this happens, your consultant may recommend a pacemaker — a small device that helps maintain a regular heartbeat. If you would benefit from a pacemaker your care team will discuss this with you.

Combined procedures

For patients with other heart conditions, ablation may sometimes be performed alongside additional cardiac surgery. Your cardiologist will guide you through the options and provide reassurance and support at every stage.

Before the procedure

Before your ablation operation for arrhythmia, you’ll meet your consultant to review your symptoms, medical history, and any concerns you may have.

You may need additional tests, such as blood tests or scans, to help plan your treatment safely. Your care team will also provide clear instructions on how to prepare for the procedure, including practical steps for the day and any lifestyle adjustments that can support a smooth recovery.

Pre-operative appointments and tests

It’s important to attend all pre-operative appointments with your consultant and care team. This is an opportunity for you to ask questions, clarify potential risks, and discuss post-procedure care to make sure you feel confident and supported throughout your treatment.

Food and drink

As your procedure is performed under anaesthesia, you will need to fast beforehand. This helps reduce the risk of certain complications of having a general anaesthetic. Your care team will give clear instructions on when to stop eating and drinking.

Medications

Tell your doctor about all medications you take. Some may need to be adjusted or temporarily stopped before your procedure to reduce the risk of complications.

Lifestyle changes

Your consultant may suggest temporary lifestyle adjustments to improve the safety and effectiveness of your procedure. These can include changes to diet, taking exercise, or stopping smoking. Following these recommendations can help support a smooth recovery.

Shaving the groin

Before your procedure, you may be asked to shave the area around your groin. This helps reduce the risk of infection where catheters will be inserted. Your care team will give clear instructions on how and when to do this safely.

Who will be involved?

From your first consultation to your recovery, a dedicated team will guide and support you. You’ll be under the care of a GMC-registered consultant cardiologist, supported by experienced nurses and technicians who specialise in heart rhythm procedures.

All our consultants are highly skilled, with expertise in complex cardiac care and arrhythmia treatment. Many hold specialist NHS positions and have been internationally recognised in their field. Throughout your treatment, our team will be there to answer questions, explain each step and provide personalised care to help you feel confident and supported.

The procedure

During the procedure

During a heart ablation, your consultant inserts thin tubes called catheters through a vein, usually in your groin or neck, and guides them to your heart.

Special sensors on the catheters map the heart’s electrical signals to pinpoint the source of the irregular heartbeat. Once identified, either hot or cold energy is carefully applied to treat the faulty tissue, creating tiny scars that block the abnormal signals and restore a normal rhythm.

If the ablation affects the heart’s natural electrical pathway, a pacemaker may be fitted during the same procedure. The entire process is monitored closely by an experienced team to reduce your risk of complications at every stage.

How long does the procedure take?

A cardiac ablation procedure usually takes 3–6 hours, depending on the type of arrhythmia and complexity of your heart’s electrical signals.

Anaesthetic choices

Cardiac ablation can be carried out using either a local or general anaesthetic, depending on the type of procedure you need. With local anaesthetic, the area where the catheters are inserted is numbed, and you remain awake but comfortable.

General anaesthesia is used for procedures that involve surgery through the chest, meaning you’ll be fully asleep throughout. Your consultant will explain which option is right for you and what to expect on the day.

Pain during and after surgery

You shouldn’t feel any pain during the procedure as the anaesthesia will keep you comfortable, and your care team will monitor you closely throughout. Afterwards, it’s normal to feel some soreness or bruising where the catheters were inserted, usually in the groin. Some people also experience mild chest discomfort or a fluttering sensation as the heart settles into a new rhythm.

What happens straight after surgery

After your ablation, you'll be taken to a recovery area where the team will monitor you as the anaesthetic wears off. Your heart rhythm, blood pressure and the catheter site in your groin will be checked regularly to support your recovery and comfort.

Most people go home the same day, but if you’ve had a general anaesthetic or need a little longer to recover, you may stay overnight.

Your hospital stay

If you’ve had a general anaesthetic or your consultant feels you need extra monitoring, you may stay overnight so the team can keep an eye on your heart rhythm and recovery. During your stay, our nursing team will check on you regularly, make sure you’re comfortable and support you with anything you need.

As soon as you’re well enough to move around, eat, drink and use the bathroom safely, your consultant will discuss discharge plans with you and explain what to expect once you’re home.

After ablation surgery for heart arrhythmia, most people need a few days of rest and can resume light activity within a week. You should avoid strenuous exercise or heavy lifting for several weeks.

Short-term side effects

• A small amount of bleeding at the groin site
• Bruising or tenderness at the catheter site
• Fatigue
• light-headedness when standing or moving quickly
• Mild chest discomfort or soreness
• Slight palpitations or ‘flutters’ as the heart settles

These effects are usually temporary and improve within days to weeks.

First 24 hours recovery

Immediately after the procedure, you’ll need to lie flat on your back and rest while your heart rhythm and catheter site are closely monitored. Most people stay in hospital overnight to ensure they are stable and recovering safely before going home.

Managing your recovery at home 

Once you’re home, your care continues with clear guidance from your healthcare team. You’ll be supported with advice on medications, activity levels and follow-up appointments, so you can recover as quickly as possible and return to your usual routine. The plan will be tailored to your procedure and personal needs.

Wound care

After your procedure, you’ll have a small wound where the catheter was inserted — usually in your groin or neck. It may feel tender or look slightly bruised for a few days. Keep the area clean and dry, follow any guidance on dressings and look out for redness, swelling or discharge, which may indicate an infection.

Pain relief 

You may feel soreness around your chest and catheter sites. Pain relief will be provided at hospital and you’ll be given medication to take home for up to 14 days to keep you comfortable.

Cardiac rehab

After your ablation, you may be offered cardiac rehabilitation to support your recovery. This programme can include general exercise, advice on healthy lifestyle choices and guidance to help you safely manage your heart rhythm.

Check-ups and follow-up appointments

After your ablation, your healthcare team will monitor your heart and adjust medications as needed. The frequency of follow-ups depends on your individual condition and how well your heart is responding, but you can generally expect appointments within a few weeks of your procedure and additional checks over the following months.

How quickly an ablation works

An ablation may not take full effect immediately and you may still notice some palpitations or irregular heartbeats in the first few weeks. It usually takes around 8–10 weeks to tell if the procedure has been successful.

If it works, your healthcare professional may discuss reducing or stopping some medications. If your symptoms continue or return, further treatment or another ablation might be needed, and your doctor will guide you on the best next steps.

Smoking

Avoid smoking during your recovery, as it can slow healing and increase the risk of complications.

Driving

You won’t be able to drive for up to 24 hours after having a general anaesthetic. You can usually start driving a few days after your procedure, but your doctor will confirm when it’s safe. The timing may depend on the type of procedure you had and the vehicle you drive.

Time off work

Most people will need a few days off to rest and recover after an ablation. The exact duration depends on the type of work you do and how quickly you feel ready, especially if your job involves physical activity or long periods of sitting.

Help from loved ones

You’ll need someone to drive you home from the hospital as you won’t be able to drive. It’s also helpful to have a friend or family member assist with everyday tasks, like shopping and household chores, for the first few days of your recovery.

Resuming normal activities

Most people can return to light day-to-day activities soon after their procedure, but you should avoid heavy lifting for at least 2 weeks. Gentle exercise, like walking, can usually be resumed soon, but more vigorous activities or sports should only be restarted once your healthcare professional confirms it’s safe.

Cardiac ablation is generally safe, but like any procedure, it carries some risks. Mild bruising or bleeding can occur where the catheter was inserted, and a small collection of blood under the skin (haematoma) is possible.

Contact a healthcare professional if you notice:

• Fainting
• Palpitations
• Severe chest pain
• Shortness of breath
• The wound becomes very red, swollen or painful

General anaesthesia is safe for most people. Common side effects include nausea, vomiting, a sore throat, shivering, or mild confusion after waking up.

Not all irregular heartbeats need ablation. Often, arrhythmias can be managed with medication that helps to control your heart rate or rhythm. Lifestyle changes, such as reducing caffeine, managing stress, or treating other health conditions, may also improve symptoms.

For some people, other procedures may be considered if ablation isn’t suitable. These can include implantable devices, such as a pacemaker, or minimally invasive interventions tailored to your type of arrhythmia. Your cardiologist will discuss which options are safest and most effective for you, helping you make a decision that fits your needs and lifestyle.