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Los Angeles, California, May 15, 2012 -  Alfredo Trento, MD, Director, Cardiothoracic Surgery Division at Cedars-Sinai Heart Institute during a Mitral Valve Repair for patient Betty Jean Trusel...A MAZE Procedure was performed to treat her atrial fibrillation, which is defined as an irregular and often rapid heart rate that commonly causes poor blood flow to the body. During atrial fibrillation, the heart's two upper chambers (the atria) beat chaotically and irregularly ? out of coordination with the two lower chambers (the ventricles) of the heart. Dr. Trento used an AtriCure cryoICE cryo-ablation probe (seen here) filled with nitrous oxide to kill the tissue, creating the effect of a dead end for the cells...The console has 3-D imaging (through the eyeholes shown) as well as two hand controllers to maneuver  one of the three of the arms are for tools that hold objects, act as a scalpel, scissors, bovie, or unipolar or bipolar electrocautery instruments and two foot controllers to  operate the energy supplied to the instruments to cauterize, coagulate, or cut the tissue  and to move the endoscopic camera in or out and therefore bring the surgical image closer or further away.