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Catheter ablation is a medical procedure used to treat some arrhythmias. An arrhythmia is a problem with the speed or rhythm of the heartbeat.
During catheter ablation, a long, thin, flexible tube is put into a blood vessel in your arm, groin, or neck. This tube is called an ablation catheter. It’s then guided to your heart through the blood vessel. A special machine sends energy through the catheter to your heart. This energy finds and destroys small areas of heart tissue where abnormal heartbeats may cause an arrhythmia to start.
The heart’s electrical system controls the speed and rhythm of your heartbeat. With each heartbeat, an electrical signal spreads from the top of the heart to the bottom. As it travels, the electrical signal causes the heart to contract and pump blood.
The process repeats with each new heartbeat. A problem with any part of this process can cause an arrhythmia.Learn More
Catheter ablation is one of several treatments for arrhythmia. Your doctor may recommend it if
Though few, catheter ablation has risks. These include bleeding, infection, and pain where the catheter is inserted. More serious problems include blood clots and puncture of the heart. Your doctor will explain the risks to you.
Whether you have diabetes, kidney disease, or other conditions that may require taking extra steps during or after the procedure to avoid complications.
Catheter ablation is done in a hospital. Doctors who do this procedure have special training in cardiac electrophysiology and ablation of diseased heart tissue.
Before the procedure, you're given medicine through an intravenous (IV) line inserted in a vein in your arm. The medicine will help you relax. It may make you sleepy. You're also connected to several machines that check your heart's activity during the procedure.
Once you're drowsy, your doctor numbs an area on your arm, groin (upper thigh), or neck. A needle is used to make a small hole through the skin into a blood vessel. Your doctor puts a tapered tube called a sheath through this hole.
Your doctor then puts a thin, flexible wire and an ablation catheter through the sheath and into your blood vessel. The guide wire is threaded through your blood vessel to your heart. The wire helps your doctor place the catheter correctly. Then, your doctor puts a special dye into the catheter. The dye makes the inside of your heart show up on special x-ray images called angiograms. The images help your doctor place the tip of the catheter in the correct spot in the heart.
Electrodes at the end of the catheter are used to stimulate the heart and record its electrical activity. This helps your doctor learn where abnormal heartbeats are starting in your heart.
Your doctor aims the tip of the catheter at the small area of heart tissue where abnormal heartbeats are starting. A special machine sends energy through the catheter to create a scar line, also called an ablation line. This stops abnormal electrical signals from traveling to the rest of the heart and causing arrhythmias.
You may sleep on and off during the procedure. You generally will not feel anything except for:
The procedure lasts 3 to 6 hours. When the procedure is done, your doctor will pull back the ablation catheter and take it out along with the sheath and guide wire. The opening left in the blood vessel is closed and bandaged.
After the procedure, you’re moved to a special care unit where you lie still for 4 to 6 hours of recovery. Lying still prevents bleeding at the site where the catheter was inserted.
While you’re in the special care unit, you’re connected to special devices that measure your heart’s electrical activity and blood pressure.
Your doctor determines whether you need to stay overnight in the hospital. Some people go home the same day. Others need to stay overnight for 1 or more days. Driving after the procedure may not be safe. Your doctor will let you know if you need to arrange for someone to drive you home.
Recovery from catheter ablation is usually quick. You may feel stiff and achy from lying still for 4 to 6 hours after the procedure. In addition, a small bruise may form at the site where the ablation catheter was inserted. The area may feel sore or tender for about a week. Most people are able to return to normal activity in a few days.
Talk to your doctor about signs and symptoms to watch for. Let your doctor know if you have problems such as:
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