Cardiac Catheter Cryoablation
by Elizabeth A. Peterson, MFA
Cryoablation uses extremely cold temperature to destroy cells. Cardiac catheter cryoablation is used to destroy selected heart cells.
Reasons for Procedure
This procedure is done to disable heart cells that are creating irregular heartbeats called arrhythmias. After the procedure, normal heart rhythm should be restored.
Problems from the procedure are rare, but all procedures have some risk. Your doctor will review possible problems such as:
Your chances of problems are higher for:
What to Expect
Prior to Procedure
You may have an electrophysiology study to pinpoint where the arrhythmia is.
Leading up to your procedure:
Local anesthesia is used. It will numb the area where the catheter is placed. You may get a mild sedative to relax you.
Description of Procedure
An ablation catheter will be inserted into a blood vessel. The groin, upper thigh area, arm, or wrist can be used. The catheter is passed through a blood vessel to the heart. X-rays will help guide the catheter to the right place.
Your doctor will locate the origin of your arrhythmia. This will be done by setting off the arrhythmia with the catheter tip. When found, the area is cooled with the tip. The cold will temporarily stop the arrhythmia. If it’s not the right area, the tip is removed. The tissue will not be damaged.
The tubes will be removed and the area will be bandaged.
Immediately After Procedure
You will be moved to a recovery room.
If the groin was used, you will likely need to lie still and flat on your back for a period of time. A pressure dressing will help control bleeding.
How Long Will It Take?
3-6 hours, but it could be longer
How Much Will It Hurt?
You may feel some minor discomfort as the catheter is inserted. You may feel lightheaded, experience a rapid heartbeat, or experience chest pain during the freezing process.
Average Hospital Stay
Most people stay overnight for further observation. If you have problems, you may need to stay longer.
At the Hospital
The healthcare staff will watch your vital signs. They will also care for the insertion site to make sure there aren’t any problems.
To help you heal faster:
Call Your Doctor
Call your doctor if any of these occur:
If you think you have an emergency, call for emergency medical services right away.
American Heart Association
Heart Rhythm Society
Canadian Cardiovascular Society
Heart and Stroke Foundation
Ablation for arrhythmias. American Heart Association website. Available at:
...(Click grey area to select URL)
Updated June 5, 2017. Accessed July 9, 2018.
Catheter ablation. Johns Hopkins Medicine website. Available at: https://www.hopkinsmedicine.org/healthlibrary/test_procedures/cardiovascular/catheter_ablation_135,45. Accessed July 9, 2018.
Catheter ablation. National Heart, Lung, and Blood Institute website. Available at: https://www.nhlbi.nih.gov/health-topics/catheter-ablation. Accessed July 9, 2018.
Miller JM, Zipes DP. Cardiology patient page. Catheter ablation of arrhythmias. Circulation. 2002;106(25):e203-205.
6/2/2011 DynaMed Plus Systematic Literature Surveillance http://www.dynamed... : Mills E, Eyawo O, Lockhart I, Kelly S, Wu P, Ebbert JO. Smoking cessation reduces postoperative complications: a systematic review and meta-analysis. Am J Med. 2011;124(2):144-154.
Last reviewed May 2018 by EBSCO Medical Review Board Michael J. Fucci, DO, FACC
Last Updated: 7/9/2018
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