Maze Procedure Success Rates
The open-chest maze procedures done by surgical ablation have been found to have similar success rates to Cox Maze III procedures, including those utilizing a variety of surgical ablation energy sources. Recent examples include:
- A 2004 report of patients treated at Washington University (St. Louis) School of Medicine using a bipolar radiofrequency ablation system reported that 91% were afib-free after six months, and that 75% of those did not require antiarrhythmic drugs.1
- A 2005 worldwide multicenter study reported that 85% of patients having epicardial (outside of the heart) beating-heart surgical ablation using high-intensity focused ultrasound (HIFU) were afib-free after six months, including 80% of patients with permanent atrial fibrillation.2
- A 2005 report from the Department of Cardiothoracic Surgery at New York Presbyterian Hospital–Weill Cornell Medical Center reported that 88.5% of patients having open chest surgical ablation maze procedures using argon-based endocardial (inside the heart) cryoablation (cold temperatures) were afib-free after 12 months.3
- A 2006 report to the American Association for Thoracic Surgery (AATS) annual meeting compared Cox Maze III surgery to surgical ablation maze procedures using bipolar radiofrequency ablation and found that surgical ablation decreased the time required and maintained the efficacy such that more than 90% of patients in each group were afib-free after 12 months.4
Many centers doing this maze surgery also cite freedom from stroke in excess of 99%.