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Maze III replication using radiofrequency microbipolar coagulation
1Dr. P K Sen Department of Cardiovascular & Thoracic Surgery, K E M Hospital, Parel, Mumbai 400 012, India.
Heart, Lung & Circulation
|December 15, 2005
Summary
This study introduces a microbipolar coagulation technique for atrial fibrillation surgery, reducing procedure times. It effectively restores sinus rhythm in most patients, offering a safe alternative to traditional Maze procedures.
Area of Science:
- Cardiac Surgery
- Electrophysiology
- Minimally Invasive Techniques
Background:
- Traditional Cox's Maze III procedure is associated with prolonged bypass and cross-clamp times.
- A novel technique utilizing microbipolar coagulation has been developed to replicate Maze III incisions.
Purpose of the Study:
- To evaluate the safety and efficacy of a microbipolar coagulation technique for atrial fibrillation surgery.
- To assess the impact of this technique on operative times and rhythm restoration.
Main Methods:
- The procedure involves standard hypothermic cardiopulmonary bypass and cardiac arrest.
- Microbipolar coagulation is used for left and right atrial lesions, with cryolesions at the mitral and tricuspid annuli to protect the circumflex artery.
- The technique was performed concomitantly with valve surgery in 84 patients.
Main Results:
- Sinus rhythm was restored in 86% of patients.
- The microbipolar coagulation technique demonstrated safety and effectiveness.
- The procedure is easily reproducible with inexpensive, readily available tools.
Conclusions:
- Microbipolar coagulation offers a safe and effective alternative for atrial fibrillation surgery.
- While the cure rate may be lower than Cox's Maze III, it restores sinus rhythm and atrial function in the majority of patients with reduced operative time.