how often does ablation work
1 Catheter ablation is a low-risk procedure that is successful in about 90 percent of the people who have it. 2  This procedure takes place in a special hospital room called an electrophysiology (EP) lab or a cardiac catheterization (cath) lab. 3  It takes 2 to 4 hours. Before you leave the hospital, the nurse will give you written instructions about what to do at home. 2  Aspirin is often prescribed for 2 to 4 weeks to minimize risk of clot formation at ablation sites. 3  Donât drive for 24 hours after you leave the hospital.