Cardiac Ablation Procedure: What to Expect

Hearing that you need a heart treatment can understandably bring up some anxiety. However, learning exactly what happens before, during, and after your treatment is one of the best ways to put your mind at ease.

If medications haven’t been able to control your irregular heartbeat (arrhythmia), your doctor might recommend a cardiac ablation procedure. Here is a simple, easy-to-understand breakdown of what you can expect.

What Is Cardiac Ablation?

Your heart relies on electrical signals to beat in a steady, coordinated rhythm. Sometimes, certain tissues in the heart start sending out chaotic or faulty signals, leading to arrhythmias like atrial fibrillation (AFib) or supraventricular tachycardia (SVT).

A cardiac ablation or cardiac catheter ablation is a minimally invasive treatment designed to stop these abnormal signals. Instead of opening up your chest, a heart specialist (cardiac electrophysiologist) guides thin, flexible tubes called catheters through your blood vessels and into your heart. Once they find the exact spot causing the trouble, they apply different forms of energy, including heat, extreme cold, or pulsed electric field to create tiny scars in the heart tissue. Because scar tissue doesn’t conduct electricity, these small marks act as a roadblock, stopping the faulty signals and helping your heart return to a normal rhythm.

What Happens During the Procedure?

When you arrive at the hospital, a nurse will insert an IV in your arm to deliver fluids and medication. You will be given medication to help you relax—depending on your specific needs, you might be lightly sedated and awake, or you may be given general anesthesia to sleep through the whole thing.

Here is how the procedure generally unfolds:

• Preparation: The doctor will clean and numb the area where the catheters will enter your body, usually in the groin, but sometimes the arm or neck.
• Mapping the Heart: The doctor inserts the catheters through a blood vessel and carefully guides them to your heart. Using special sensors, they will perform an “electrophysiology (EP) study” to map your heart’s electrical pathways and pinpoint the exact tissue causing the irregular beats.
• The Ablation: Once the problem area is found, the doctor uses the catheter to deliver heat (radiofrequency ablation) or extreme cold (cryoablation) to create the necessary scar tissue.
• Finishing Up: The catheters are gently removed, and pressure or a small stitch is applied to the entry site to prevent bleeding.

The entire process usually takes between two to six hours, depending on the complexity of your arrhythmia.

Is It Painful?

It’s a common worry, but the cardiac ablation procedure is not considered major surgery, and it shouldn’t be painful. The entry point is completely numbed, and the sedation ensures you stay comfortable. While you might feel some mild pressure or a fleeting flutter in your chest during the mapping phase, you shouldn’t feel pain in your heart.

Recovery and Results

After the procedure, you will rest in a recovery room for six to eight hours while nurses monitor your heart rate and blood pressure. You must keep your leg (or arm/neck) very still to allow the puncture site to seal and prevent bleeding. Depending on your situation, you might go home the same day or stay overnight for observation.

At-Home Recovery

• You might have a small bruise or feel some soreness where the catheter was inserted. This usually fades within a few weeks. 
• Most people can return to work and light, everyday activities within five to seven days.
• You will need to avoid heavy lifting and intense exercise for at least a week.

Keep in mind that the full benefits of the ablation aren’t always instant. It is completely normal to still feel some irregular heartbeats for a few weeks while the heart tissue fully heals and the scars settle.

If you are looking to undergo a cardiac ablation procedure, Vejthani International Hospital in Bangkok, Thailand, is highly regarded for its advanced cardiac care.

Vejthani Hospital’s Cardiac Center is equipped with state-of-the-art Electrophysiology (EP) labs. The team utilizes advanced 3D mapping technology alongside radiofrequency ablation to effectively treat arrhythmias like atrial flutter and atrial fibrillation. 

Potential Risks to Consider

While cardiac ablation is incredibly common and generally very safe, especially when performed at highly experienced centers, it does carry a low risk of complications. Your doctor will discuss these with you, but they can include:

• Bleeding or infection at the catheter insertion site.
• Damage to the blood vessels or heart valves.
• Blood clots.
• The potential need for a permanent pacemaker (if the heart’s normal electrical system is affected).

Always contact your doctor immediately if you experience severe chest pain, shortness of breath, dizziness, or notice swelling and bleeding at your puncture site after you go home.