Don't delay your care at Mayo Clinic
Featured conditions Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. See more conditions.
Featured conditions
Subscribe to Housecall
Our general interest e-newsletter keeps you up to date on a wide variety of health topics.
Cardiac ablation is a procedure that scars tissue in your heart to block abnormal electrical signals. It is used to restore a normal heart rhythm. Long flexible tubes (catheters) are threaded through blood vessels to your heart. Sensors on the tips of the catheters transmit heat or cold energy to ablate the tissue. This illustration shows a type of cardiac ablation called pulmonary vein isolation.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.