Cardiac Ablation

What this procedure is

Cardiac ablation is a procedure used to correct heart rhythm problems. During the process, a doctor creates tiny scars in small areas of heart tissue. These scars help block the irregular electrical signals that cause an out-of-sync heartbeat.

To reach the heart, your clinician usually inserts thin, flexible tubes called catheters through a blood vessel, often in the groin or neck. They carefully guide these tubes to the heart. Once in place, the doctor uses either heat (radiofrequency energy) or extreme cold (cryoablation) to treat the specific spots causing the trouble.

What it treats or fixes

This procedure is mainly used to treat arrhythmias, which are problems with the speed or pattern of your heartbeat. If your heart beats too fast or in an uneven way, it may not pump blood effectively to the rest of your body.

Common conditions treated include:

• Atrial fibrillation (AFib): A fast, shaky heartbeat in the upper chambers of the heart.
• Supraventricular tachycardia (SVT): A very fast heart rate that starts above the heart's lower chambers.
• Other types of rapid or irregular heartbeats that have not improved with medicine.

The goal is to help your heart return to a regular, healthy rhythm. This can reduce symptoms like heart palpitations (feeling like your heart is racing or skipping a beat), shortness of breath, and fatigue.

How common it is & where it's done

Cardiac ablation is a common and standard treatment for many heart rhythm issues. Thousands of these procedures are performed every year. It is often considered when medications are not working well or are causing side effects for the patient.

The procedure takes place in a hospital, usually in a specialized room called an electrophysiology (EP) lab. This room is similar to an operating room but is equipped with advanced monitors and imaging tools. These tools allow the medical team to see your heart's electrical activity and the position of the catheters in real-time.

Recovery: What to Expect

After the procedure, you will move to a recovery area to rest for several hours. To prevent bleeding where the catheter (a thin, flexible tube) was inserted, you will need to lie still. Most people go home the same day, though your clinician may ask you to stay overnight for observation.

You might feel some soreness or see a small bruise where the tube entered your body. For the first few days, you should avoid heavy lifting and intense exercise. Most people can return to their normal activities within a week.

When to call your clinician: Contact your care team if you notice signs of infection like a fever, or if the insertion site has increased swelling, redness, or bleeding that does not stop with light pressure.

Risks & Possible Complications

Cardiac ablation is generally considered a safe procedure, but like any medical treatment, it carries some risks. Your clinician will discuss these with you beforehand to ensure the procedure is right for you.

• Bleeding or bruising: This is common at the spot where the catheter was placed, usually in the groin.
• Blood vessel damage: Rarely, the tube may cause a small tear in the vein or artery as it travels to the heart.
• Heart rhythm changes: You might feel some fluttering as your heart heals, though this often goes away on its own.
• Blood clots: Your care team may use blood-thinning medicine during or after the procedure to lower this risk.

Outcomes & Long-Term Results

The main goal of ablation is to stop or reduce abnormal heart signals. This can help you feel better by reducing symptoms like shortness of breath or palpitations (the feeling of a racing or skipping heart). For many, this leads to a better quality of life and more energy for daily activities.

While many people see lasting results, some may need a second procedure if the abnormal signals return. Your clinician may also suggest continuing certain heart medications for a period of time while your heart tissue heals. Long-term success often depends on the specific type of heart rhythm issue being treated.

Emotional Support & Reassurance

It is completely normal to feel anxious before a heart procedure. Remember that cardiac ablation is a routine way to treat heart rhythm problems and has been used successfully for many years. Your medical team is there to support you and keep you comfortable throughout the process.

Focusing on the long-term benefits—such as feeling more like yourself again—can help ease your mind. If you feel overwhelmed, do not hesitate to ask your clinician questions. Knowing what to expect can help you feel more in control of your health journey.

Why doctors recommend it

Doctors usually suggest cardiac ablation if you have an arrhythmia, which is a problem with the speed or pattern of your heartbeat. This procedure uses energy to create tiny scars in the heart tissue. These scars block the irregular electrical signals that cause your heart to beat too fast or out of sync.

Your clinician may recommend this if:

• Medicines used to control your heart rhythm are not working well enough.
• You experience unpleasant side effects from heart medications.
• You have a specific type of heart rhythm problem, such as supraventricular tachycardia (SVT) or atrial fibrillation (AFib), that responds well to ablation.
• You have a high risk of serious complications from your heart rhythm.

Urgent vs planned treatment

In most cases, cardiac ablation is a planned (elective) procedure. This means you and your care team have time to discuss the benefits and prepare for the visit. It is often considered after other treatments, like lifestyle changes or medications, have been tried first.

However, there are times when the procedure might be more urgent. If a heart rhythm problem is causing severe symptoms or making it difficult for the heart to pump blood effectively, a doctor might recommend the procedure sooner to stabilize the heart's electrical system.

Goals of treatment

The main goal of cardiac ablation is to help your heart return to a normal, steady rhythm. By stopping the "short circuits" in the heart's electrical system, the procedure aims to reduce or eliminate bothersome symptoms like heart palpitations (a fluttering feeling in the chest), shortness of breath, and fatigue.

Success often means a better quality of life. For many people, a successful ablation means they can be more active and may even be able to reduce the amount of heart medication they take. While it may not always be a permanent cure for every patient, it is a common way to manage heart rhythm issues and help prevent future heart-related health problems.

Who may benefit

Cardiac ablation is often used for people with an arrhythmia, which is a problem with the rate or rhythm of the heartbeat. If your heart beats too fast or in an irregular way, your clinician may suggest this procedure to help restore a normal rhythm. It is commonly used for conditions like atrial fibrillation (AFib), supraventricular tachycardia (SVT), and other heart rhythm disorders.

This procedure may be a good option if you have symptoms like heart palpitations, shortness of breath, or feeling very tired, and these symptoms do not get better with lifestyle changes or medication. Some people choose ablation because they have trouble with the side effects of heart rhythm medicines. Research also suggests that treating certain rhythms like AFib earlier may help prevent the condition from becoming more permanent over time.

When it may not be the right option

Ablation is not always the first step in treatment. Your care team may first try medications to control your heart rate or rhythm. If your symptoms are mild and your heart is otherwise healthy, you and your clinician might decide that the benefits of the procedure do not outweigh the risks at this time.

In some cases, an irregular heartbeat is caused by a temporary problem, such as an overactive thyroid or a reaction to a specific substance. If the underlying cause can be fixed, you may not need ablation. Additionally, if an arrhythmia has been present for many years, the heart may have undergone physical changes that make the procedure less likely to be successful. Your clinician will look at your overall health and the structure of your heart to see if this is the right path for you.

Questions to ask your care team

Deciding on a heart procedure is a big step. It is helpful to bring a list of questions to your appointment so you can feel confident in your choice. You may want to ask your clinician:

• What type of ablation is best for my specific heart rhythm?
• What are the chances that this procedure will fix my symptoms?
• Will I still need to take blood thinners or rhythm medications after the procedure?
• What are the most common risks for someone with my health history?
• How long is the recovery, and when can I return to my normal activities?

In the procedure room

The procedure takes place in a specialized area called an electrophysiology (EP) lab. This room looks similar to an operating room and is equipped with advanced monitors and imaging screens. A team of experts, including a cardiologist (a heart specialist), nurses, and technicians, will be there to care for you throughout the process.

High-level steps

The procedure involves several key steps to help your heart beat more regularly:

• Access: Your clinician makes a small opening in a blood vessel, usually in the groin area.
• Insertion: They guide thin, flexible tubes called catheters through your blood vessels and into your heart.
• Mapping: The team uses the catheters to find the exact spots in your heart that are causing the irregular rhythm.
• Ablation: Once the problem area is found, the doctor uses heat (radiofrequency energy) or extreme cold (cryoablation) to create tiny scars. These scars block the irregular electrical signals that cause heart rhythm problems.

Anesthesia and pain control

To keep you comfortable, your clinician may use different types of medicine. You might receive "conscious sedation," which makes you feel very relaxed and sleepy, or general anesthesia, which puts you into a deep sleep. A local anesthetic will also be used to numb the area where the catheters are inserted. You may feel some pressure or a dull ache during the procedure, but you should not feel sharp pain.

Monitoring and safety steps

Your safety is the top priority during the procedure. The medical team will constantly monitor your heart rate, blood pressure, and oxygen levels. They use special imaging tools, such as X-rays or ultrasound, to see the catheters inside your body in real-time. This helps the doctor move the tubes safely and apply the treatment to the correct location.

Immediately after the procedure

Once the procedure is finished, the catheters are removed. A nurse or technician will apply firm pressure to the insertion site to prevent bleeding. You will then be moved to a recovery room where you will need to lie flat and keep your leg straight for several hours. This helps the small wound heal properly. Your care team will continue to check your heart rhythm and vital signs as the medicine wears off.

Typical procedure length

A cardiac ablation usually takes between 3 and 6 hours. The exact time depends on the specific type of heart rhythm issue being treated and how many areas of the heart need attention. Your clinician can give you a better idea of what to expect based on your specific health needs.

Common approaches (open vs minimally invasive)

Most cardiac ablations are performed using a minimally invasive approach. This is often called catheter ablation. Instead of making large cuts, the doctor inserts thin, flexible tubes called catheters into a blood vessel, usually in the groin or neck. These tubes are gently guided through the blood vessels until they reach the heart.

Once the catheters are in place, the doctor uses energy to create tiny scars on specific areas of heart tissue. These scars act as barriers to stop the faulty electrical signals causing the arrhythmia. There are two main types of energy used:

• Radiofrequency ablation: This method uses heat energy to create the scar tissue.
• Cryoablation: This method uses extreme cold to freeze the tissue.

In some cases, an open surgical approach is used. This is less common for ablation alone. It is typically performed if you are already having open-heart surgery for another reason, such as a valve replacement or bypass surgery. During this surgery, the doctor can treat the arrhythmia directly on the heart.

Partial vs total

The goal of ablation is to stop irregular rhythms, but the extent of the procedure varies based on your specific condition. In many procedures, the doctor targets only the specific areas triggering the problem, such as the openings of the pulmonary veins. This is a targeted approach that allows your heart's natural pacemaker to continue controlling the beat.

In other cases, a procedure called AV node ablation may be recommended. This is considered when other treatments have not worked. During this procedure, the electrical connection between the upper and lower chambers of the heart is completely blocked.

If this approach is chosen, the heart can no longer beat using its own electrical system. Consequently, a permanent pacemaker must be implanted to regulate the heartbeat. This is not always applicable and is usually reserved for patients who cannot manage their symptoms with medication or targeted ablation.

Revision or repeat procedures

Cardiac ablation is effective for many people, but it does not always stop the arrhythmia permanently after a single procedure. In some cases, the heart tissue may heal over the scars created during the ablation. If the tissue heals, the abnormal electrical signals can cross through again, causing the irregular heartbeat to return.

Additionally, new electrical pathways can develop in the heart over time. Because of this, it is possible that you may need a repeat procedure. A second ablation can help touch up the original treated areas or address new sources of the problem.

Your clinician will monitor your recovery closely. If your symptoms come back, they will discuss whether a revision procedure or a different management strategy is right for you.

Tests and imaging that may be done

Before your procedure, your healthcare team needs to gather detailed information about your heart health. This helps them plan the safest and most effective way to perform the ablation. You may undergo a physical exam and several standard tests in the weeks or days leading up to your appointment.

Common tests include:

• Blood tests: These check your kidney function, thyroid levels, and blood counts to ensure your body is ready for the procedure.
• Electrocardiogram (ECG or EKG): This test records the electrical signals in your heart to help identify the type of irregular rhythm you have.
• Echocardiogram: This uses sound waves to create moving pictures of your heart, showing its size and how well it is pumping.

In some cases, your clinician may order advanced imaging, such as a CT scan or an MRI. These create detailed 3D maps of your heart structure, which guide the doctor during the ablation.

Medication adjustments

Managing your medications correctly is a critical part of preparing for cardiac ablation. Your doctor will give you a specific schedule for which medicines to take and which to pause. Do not stop taking any medication unless your clinician specifically instructs you to do so.

Common adjustments may include:

• Blood thinners: If you take anticoagulants (blood thinners) to prevent clots, you might be asked to stop them for a few days before the procedure to lower the risk of bleeding. However, some patients are told to continue them. Follow your doctor's advice exactly.
• Heart rhythm medications: You may need to stop taking anti-arrhythmic drugs a few days early. This allows the doctor to trigger the irregular heart rhythm during the procedure so they can locate the area that needs treatment.
• Diabetes medications: Because you will likely be fasting, your doctor may adjust your insulin or oral diabetes medicine to prevent low blood sugar.

Day-before and day-of instructions

Getting your body and logistics ready can help the day go smoothly. Most hospitals provide a checklist to follow.

The day before

• Fasting: You will usually be asked not to eat or drink anything after midnight the night before your procedure. This is to keep you safe while under sedation or anesthesia.
• Pack a bag: Although many people go home the same day, some stay overnight for observation. It is helpful to pack toiletries and a change of clothes just in case.
• Arrange a ride: You will not be able to drive yourself home because of the medications used during the procedure. Arrange for a family member or friend to drive you.

The day of the procedure

• Medications: If you were told to take certain morning medications, take them with only a small sip of water.
• Clothing: Wear comfortable, loose-fitting clothes. Leave all jewelry, watches, and valuables at home.
• Health changes: If you develop a cold, flu, or fever right before your appointment, let your healthcare team know immediately. They may need to reschedule to ensure your safety.

General surgical risks

Cardiac ablation is generally considered a safe procedure, but like any surgery or procedure involving blood vessels, there are some risks. The most common issues occur at the site where the catheter (a thin, flexible tube) is inserted, usually in the groin or neck. You might experience bleeding, bruising, or a small infection at this spot.

Other general risks involve the medications used during the procedure. Some patients may have an allergic reaction to the anesthesia or the contrast dye used to help the doctor see your blood vessels and heart. Your care team will monitor you closely to manage these reactions if they happen.

Procedure-specific complications

Because this procedure takes place inside the heart, there are specific risks related to the heart’s structure and electrical system. While serious complications are rare, your doctor will discuss them with you. Potential risks include:

• Blood vessel or heart damage: In rare cases, the catheter may accidentally puncture the heart muscle, a heart valve, or a blood vessel. This can lead to fluid collecting around the heart.
• Blood clots: Clots can form during or after the procedure. If a clot travels to the brain, it could cause a stroke or heart attack.
• Electrical system changes: Sometimes, the ablation may damage the normal electrical pathways, causing the heart rate to become too slow or creating a new arrhythmia.
• Damage to nearby organs: Rarely, the heat or cold energy used during ablation can affect the esophagus (the tube connecting your mouth to your stomach) or the nerves that control the diaphragm.
• Narrowing of the veins: Scar tissue can sometimes cause the pulmonary veins (which carry blood from the lungs to the heart) to become narrow.

How complications are treated

Your care team is trained to spot and treat complications quickly. If bleeding occurs at the catheter insertion site, doctors apply pressure or use medication to stop it. If fluid builds up around the heart, it can be drained using a needle or a small tube.

Issues with the heart's rhythm or blood flow are also treatable. If the heart rate becomes permanently too slow, a pacemaker can be implanted to help the heart beat correctly. If the pulmonary veins become too narrow, doctors can use a balloon or stent to open them back up. To prevent blood clots, your clinician may prescribe blood-thinning medication for a period of time after the procedure.

Pain control medicines

During your cardiac ablation, your care team will use medicines to keep you comfortable. This often includes sedatives to help you relax or general anesthesia, which puts you into a sleep-like state so you do not feel anything during the procedure. Your clinician will choose the best option based on your health and the type of ablation being performed.

After the procedure, you might feel some mild soreness or bruising where the small tubes, called catheters, were inserted into your skin. Your clinician may suggest over-the-counter pain relievers to help with this discomfort. It is important to tell your team about any allergies you have to pain medications before the procedure starts so they can plan safely for you.

Antibiotics

To help prevent infection, your clinician may give you antibiotics. These medicines are used to protect the areas where the catheters were placed into your blood vessels. Keeping these sites clean and free of bacteria is a standard part of the recovery process.

You might receive these medicines through an IV (a small tube in your arm) just before the procedure begins. In some cases, your care team might ask you to take them for a short time afterward. Your clinician will tailor this plan based on your specific needs and medical history.

Blood thinners and clot prevention

Blood thinners, also called anticoagulants, are very important for people having cardiac ablation. These medicines help prevent blood clots from forming in the heart or at the site of the procedure, which reduces the risk of a stroke. Your clinician will likely have you take these for several weeks before the procedure and for at least a few months afterward.

It is vital to follow your clinician's instructions exactly when taking blood thinners. Stopping them too soon or missing a dose can increase the risk of health problems. Your team will also check for any potential interactions with other medicines you may be taking to ensure your safety and to manage any risks of bleeding.

Emergency warning signs

While serious complications are rare, it is important to act quickly if a medical emergency occurs. You or a family member should call 911 or go to the nearest emergency room immediately if you experience signs of a stroke or heart attack.

Seek emergency care right away if you notice:

• Signs of a stroke: Sudden numbness or weakness (especially on one side of the body), confusion, trouble speaking or understanding speech, vision problems, or severe dizziness.
• Severe bleeding: If the puncture site (usually in the groin, neck, or arm) starts bleeding heavily and does not stop when you apply firm pressure.
• Chest symptoms: Sudden, severe chest pain, pressure, or tightness that does not go away.
• Breathing trouble: Severe shortness of breath or difficulty breathing.

Call your surgeon or clinic if…

Some symptoms require prompt medical attention but may not be immediate emergencies. Contact your healthcare provider if you notice changes in how you feel or how the incision site looks.

Reaching out to your care team is recommended if you experience:

• Signs of infection: A fever over 100.4°F (38°C), or redness, warmth, and drainage (pus) at the catheter insertion site.
• Circulation changes: Numbness, tingling, coldness, or a change in color in the leg or arm where the catheter was inserted.
• Worsening site issues: Swelling or a hard lump at the puncture site that gets larger.
• Heart rhythm changes: A return of a fast or irregular heartbeat, or feeling faint and lightheaded.

Expected vs concerning symptoms

Knowing what is normal during recovery can help you stay calm. Most people feel tired and may have mild discomfort for a few days after the procedure.

The Puncture Site

• Expected: A small bruise or a small lump (about the size of a pea or walnut) is common. The area may feel tender to the touch.
• Concerning: A bruise that expands rapidly, a lump that grows larger, or significant pain that is not relieved by rest or medication.

Chest Sensations

• Expected: You may feel mild soreness in your chest or notice your heart skipping a beat occasionally as it heals. This is often part of the normal healing process.
• Concerning: Constant racing heartbeats, severe pain when taking a deep breath, or fainting spells.

Non-surgical treatments

Before suggesting a procedure, your clinician may try other ways to manage an irregular heartbeat (arrhythmia). The most common approach involves medications. These may include "rate-control" drugs to slow down a fast heart or "rhythm-control" drugs, also called anti-arrhythmics, to help the heart stay in a steady pattern. Your clinician may also prescribe blood thinners to help prevent blood clots and reduce the risk of a stroke.

Another option is electrical cardioversion. This is a brief procedure where a clinician uses a controlled electric shock to "reset" the heart's rhythm while you are under mild sedation. Additionally, managing other health issues can help improve your heart health. This might include treating sleep apnea, losing weight, or controlling high blood pressure, which can all reduce the strain on your heart and help manage rhythm issues.

Watchful waiting

In some cases, your clinician may suggest a "wait and see" approach, often called watchful waiting. This is usually considered if your symptoms are very mild, do not happen often, or do not pose an immediate risk to your health. During this time, you will have regular check-ups to see if your condition is changing.

Watchful waiting allows you to monitor how the heart rhythm affects your daily life without starting a procedure right away. You might be asked to keep a record of when you feel palpitations—a sensation of a fluttering or racing heart—or shortness of breath. If these episodes become more frequent or start to last longer, your care team may decide it is time to move toward more active treatment.

When surgery becomes the best option

While many people manage their heart rhythm with medicine, these drugs do not always work for everyone. Over time, some medications may stop being effective, or they might cause side effects that are difficult to manage. If your symptoms—such as extreme fatigue, chest pain, or dizziness—interfere with your daily activities, your clinician may recommend cardiac ablation as the next step.

The timing of the procedure can be important. Research suggests that treating certain heart rhythm problems earlier may lead to better long-term results and prevent the condition from becoming permanent. If the irregular rhythm starts to weaken the heart muscle or increases the risk of heart failure, ablation may be the best way to protect your health. The goal is to stop the stray electrical signals causing the problem, which can help you feel better and return to your normal routine.

Hospital services that commonly perform this surgery

Cardiac ablation is usually performed in a specialized part of a hospital called an electrophysiology (EP) lab or a cardiac catheterization lab. These rooms are designed specifically for procedures that involve the heart's electrical system. They contain advanced monitors and mapping systems that help the medical team see exactly where an irregular heartbeat is starting.

The procedure is performed by an electrophysiologist, which is a cardiologist (heart doctor) who has extra training in heart rhythms. This specialist works with a team of nurses and technicians who focus entirely on heart rhythm care. Most large hospitals or specialized heart centers have these dedicated teams available to guide you through the process.

Patient resources and support services

Many hospitals provide patient education materials to help you prepare for the procedure and understand what to expect during recovery. This might include videos, brochures, or online portals where you can track your appointments and message your care team. Some centers also offer classes to answer common questions before your procedure date.

Support services often extend beyond the hospital stay. Your clinician may recommend cardiac rehabilitation, which is a program that helps you improve your heart health through guided exercise and education. Many facilities also host support groups, allowing you to connect with other people who are managing similar heart rhythm conditions.

Questions for choosing where to have surgery

When looking for a facility, it is helpful to find a center with a lot of experience in heart rhythm treatments. You may want to ask about the hospital's technology and the specific experience of the medical team. A well-coordinated facility will often have a clear plan for your follow-up care.

Here is a checklist of questions you might ask your clinician or the hospital staff:

• How many cardiac ablations does this hospital perform each year?
• Is there a dedicated team of electrophysiology specialists on staff?
• What kind of technology or mapping systems does the hospital use for this procedure?
• Who should I call if I have questions or concerns once I am back home?
• Does the hospital offer resources like cardiac rehab or patient support groups?

Conditions commonly treated by this procedure

Cardiac ablation is often used to treat heart rhythm problems, also called arrhythmias. These issues happen when the electrical signals that tell your heart to beat do not work correctly. Your clinician may suggest this procedure if medications or other treatments are not helping enough to manage your heart's rhythm.

Common conditions that may be treated with this procedure include:

• Atrial fibrillation (AFib): This is a common type of irregular and often rapid heartbeat that starts in the upper chambers of the heart.
• Atrial flutter: This is similar to AFib but usually involves a more organized, though still too fast, rhythm.
• Supraventricular tachycardia (SVT): This causes a very fast heartbeat that starts in the areas above the heart's lower chambers.
• Ventricular tachycardia: This is a fast heart rhythm that starts in the lower chambers (ventricles) of the heart.
• Wolff-Parkinson-White (WPW) syndrome: A condition where an extra electrical pathway in the heart causes a fast heartbeat.

Related symptoms people search for

People who are considering cardiac ablation often experience symptoms caused by an irregular heartbeat. These symptoms can happen occasionally or more frequently. It is important to have these signs evaluated by a clinician to determine if they are related to an arrhythmia or another health concern.

Symptoms that can be associated with heart rhythm issues include:

• Palpitations: A feeling that your heart is racing, fluttering, pounding, or skipping a beat.
• Shortness of breath: Feeling winded or having trouble catching your breath, especially during physical activity.
• Dizziness: Feeling lightheaded, unsteady, or as if you might faint.
• Fatigue: Feeling unusually tired, weak, or having significantly less energy than normal.
• Chest discomfort: A feeling of pressure, tightness, or minor pain in the chest area.

Evidence overview

Cardiac ablation is a widely used and well-studied procedure for treating irregular heartbeats (arrhythmias). Medical evidence suggests that for many patients, ablation is more effective than medication alone at controlling heart rhythm issues. Success rates can be high, with many people experiencing a significant reduction in symptoms or a complete return to a normal heart rhythm.

However, the procedure is not a guaranteed cure for everyone. Some patients may still need to take heart medication after the procedure. In some cases, the heart’s electrical pathways may reconnect over time, requiring a repeat procedure to achieve long-term success. Your care team will look at your specific medical history to estimate how well the treatment might work for you.

Safety notes and individualized care

Cardiac ablation is generally considered safe, but like any procedure involving the heart and blood vessels, it carries some risks. Serious complications are rare. Your clinician will weigh these risks against the benefits of correcting your heart rhythm to decide if this is the right option for you.

Common and rare risks may include:

• Bleeding or bruising: This usually happens at the site where the catheter (thin tube) was inserted, typically in the groin area.
• Blood vessel damage: Rarely, the catheter may scrape or damage the blood vessel as it travels to the heart.
• Fluid collection: In rare cases, fluid can build up around the heart (tamponade), which may require drainage.
• Blood clots: Clots can form and travel to other parts of the body, though blood-thinning medication is used to lower this risk.

Every patient is different. Factors such as your age, the type of arrhythmia you have, and your overall heart health play a major role in safety. Your doctor will discuss your individual risk profile and how they plan to keep you safe during the procedure.

Sources used

The information in this section is grounded in patient education materials and medical standards from reputable health organizations. Key sources include academic medical centers such as the Mayo Clinic and Johns Hopkins Medicine, as well as government health resources like the U.S. National Library of Medicine (MedlinePlus).