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What is cardioversion?

Cardioversion is a consultant led service used to restore a steady, regular heartbeat, known as sinus rhythm. It is most often recommended for people with atrial fibrillation (AF) or atrial flutter. During the procedure, pads are placed on your chest and a controlled electrical shock is delivered to your heart while you are asleep under a short general anaesthetic.

For some people, getting the heart back into a normal rhythm can ease symptoms such as palpitations, breathlessness, and tiredness, and may help the heart pump more effectively.

How much does private cardioversion cost?

View our prices for self-pay patients and Benenden Health members. Take advantage of payment plans through our trusted partner, Chrysalis Finance, and spread the cost of your treatment. Fit your repayments into your monthly budget rather than having to find the full cost at the time of your treatment.

Procedure type
Initial consultation price
Treatment price*
Illustration of monthly cost**
Member discount
Cardioversion
£210
From £2,450
From £245
10%
Cardioversion
Initial consultation price
£210

Treatment price*
From £2,450

Illustration of monthly cost**
From £245

Member discount
10%

I have a question about cardioversion

Why might I need cardioversion?

You may be offered cardioversion if an irregular heartbeat is causing symptoms such as palpitations, breathlessness, tiredness, dizziness, reduced exercise tolerance, or chest discomfort.

What conditions can cardioversion treat?

Cardioversion is most often used for atrial fibrillation or atrial flutter, which are rhythm problems that affect the upper chambers of the heart and can cause symptoms such as palpitations, fatigue, and breathlessness.

We can diagnose these conditions via our Cardiac Physiology Assessment Service.

What happens before cardioversion?

Before your appointment, we’ll explain how to prepare for the cardioversion procedure and whether to make any changes to your usual medication.

Some people need a transoesophageal echocardiogram first to check for blood clots in the heart. We don’t currently offer transoesophageal echocardiogram at Benenden Hospital.

 

What happens during cardioversion?

Cardioversion is usually a day case procedure carried out in our Ambulatory Care Unit (ACU) under a short general anaesthetic, so you’ll be asleep and will not feel the shock.

The team will monitor your heart rhythm, blood pressure, and oxygen levels throughout.

Pads are placed on your chest and the controlled electrical shock is delivered to help restore a normal rhythm.

The cardioversion procedure itself usually only takes a few minutes, although you’ll spend longer with us while you prepare and recover.

How successful is cardioversion?

Cardioversion is often very effective. The success rate of cardioversion may depend on how long you’ve had the rhythm problem, your heart health and whether you have other heart conditions.

If the abnormal rhythm comes back, your consultant may discuss repeating cardioversion or considering another treatment option.

Patients usually convert to a normal sinus rhythm within the first, or second attempt, but we would not continue after a third attempt.

What are the risks of cardioversion?

Cardioversion is generally safe, but risks can include skin irritation from the pads, a reaction to the anaesthetic, changes to heart rhythm or, rarely, blood clots.

Your consultant will explain the benefits, risks and any steps needed to reduce complications, such as anticoagulant medication.

What happens after cardioversion?

After private cardioversion at Benenden Hospital, you’ll be monitored while the anaesthetic wears off. Most people go home the same day.

Before you leave, we’ll check your heart rhythm and blood pressure and explain what to do at home.

You’ll need someone to drive you home and stay with you for the first 24 hours.

You may need to keep taking anticoagulants or heart rhythm medicines, and you’ll have follow up appointments to monitor your recovery.

Is cardioversion right for me?

Your consultant will advise whether cardioversion is suitable based on your symptoms, diagnosis, general health and how long you’ve had the rhythm problem.

How long will I stay in sinus rhythm after cardioversion?

This varies from person to person. Some patients remain in a normal heart rhythm for a long time after cardioversion, while others may find their irregular rhythm returns after a period of time.

The success of cardioversion depends on factors such as the type of heart rhythm condition being treated, how long you've had it, and your overall heart health. Your consultant will discuss your individual circumstances and any treatments that may help maintain a normal rhythm.

How common is cardioversion?

Cardioversion is a common and well-established treatment for certain abnormal heart rhythms, including atrial fibrillation and atrial flutter.

It is routinely performed by cardiology teams across the UK and can be an effective way of restoring a normal heart rhythm and helping to relieve symptoms such as palpitations, breathlessness and fatigue.

How long after cardioversion will I feel better?

Many patients notice an improvement in their symptoms after a successful cardioversion. For some this can be within a few days, while for others it may take longer.

Everyone recovers differently and how quickly you feel the benefits can depend on your symptoms before treatment and your overall health.

Is cardioversion considered surgery?

No, cardioversion is not considered surgery because it does not involve an operation or surgical incision.

Cardioversion is a minimally invasive procedure performed under a short general anaesthetic. Most patients return home on the same day and can resume normal activities shortly afterwards, following their consultant's advice.

Is the heart stopped during cardioversion?

No, the heart is not stopped during cardioversion.

A controlled electrical impulse is delivered to help restore the heart's normal rhythm. The procedure works by resetting the heart's electrical activity rather than stopping the heart and restarting it.

Our experts in cardiology

Dr Debjit Chatterjee

Debjit Chatterjee

Consultant Cardiologist

Dr Chatterjee is a specialist in heart monitoring and tests, including exercise stress testing.

Language(s): English, Bengali, Hindi

Location(s): Kent

Dr Grosser

Konrad Grosser

Consultant Cardiologist

Dr Grosser's interests include general cardiology, interventional cardiology and coronary CT scanning.

Language(s): English, Dutch, German

Location(s): Kent

Mr Mirza

Intisar Mirza

Consultant Cardiologist

Mr Intisar Mirza investigates breathlessness, chest pain, palpitations and lightheadedness.

Language(s): English

Location(s): Kent

Dr Mishra

Bet Mishra

Consultant Cardiologist

Dr Mishra's specialties include coronary artery disease, coronary angioplasty and echocardiography.

Language(s): English

Location(s): Kent

Dr Rajiv Rampat, Consultant Cardiologist at Benenden Hospital

Rajiv Rampat

Consultant Cardiologist

Dr Rampat's specialties include general and interventional cardiology.

Language(s): English, French

Location(s): Kent

Contact us about cardioversion

It's easy to find out more about treatment or book a consultation by giving us a call or completing our enquiry form.

Page last reviewed: 02 November 2026