Totally Thoracoscopic Maze (TT Maze) Procedure
Sutter Heart & Vascular Institute

Why is the doctor performing this procedure?
To prevent the occurrence of atrial fibrillation. Usually this procedure is recommended if medications, cardioversion, and catheter ablation have failed to control the atrial fibrillation (Afib).

What is the procedure?
Afib is a heart arrhythmia, during which electrical signals fire rapidly and erratically within the atria (top heart chambers), making the atria disorganized and unable to beat normally. The TT Maze Procedure is a minimally-invasive surgical procedure performed to create a new, stable, and defined electrical pathway (a surgically created "maze") for impulses to travel within the atria. This procedure is considered minimally-invasive because unlike the standard Maze Procedure which is done during open heart surgery.

• The TT Maze Procedure is accomplished through four small incisions that are made on each side of the chest. All of these incisions are about the size of a dime.
• With special instruments, the surgeon will create the scars (ablation lines) on the heart that will block and/or redirect the abnormal electrical impulses causing Afib.
• Scar tissue develops around the surgical incisions, and helps to maintain the electrical impulses within the proper pathway.
• The left atrial appendage (small part of the heart) is usually removed at the same time, as this is a probable cause of stroke.

The goal is to control the chaotic heart beats that result from atrial fibrillation; but sometimes medications or a pacemaker may be required after surgery.

Where is the procedure performed?
In the Operating Room (OR), under general anesthesia.

How long does this procedure take?
The TT Maze Procedure takes, 2-4 hours.

Which facilities perform this procedure?
Sutter Medical Center, Sacramento

For more information about this procedure or to schedule a consultation, please call this toll-free number (877) 452-8291.