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Five patients who had had previous cardiac operations underwent minimally invasive beating heart mitral valve operations via a right minithoracotomy between November 2006 and February 2009. The mean age was 64 ± 10 years and 4 were female. Under general anesthesia with single-lumen ventilation, cardiopulmonary bypass was established using the right femoral artery and vein. Through right minithoracotomy, the left atrium was opened without dissection of pericardial adhesion. The aorta was not cannulated or clamped, using a so-called "No Touch" technique. Four patients had mitral valve replacement and one had mitral ring annuloplasty with the heart beating. Mean cardiopulmonary bypass time was 118 ± 38 minutes. There was no early mortality or confirmed stroke. One patient who underwent mitral ring annuloplasty for ischemic mitral regurgitation died 3 months after surgery due to renal failure. At follow-up, New York Heart Association functional class had improved in 3 patients. In conclusion, in our initial series, minimally invasive beating heart redo mitral valve surgery through right minithoracotomy was safely performed with no early mortality.

Redo Mitral Valve Operation via Right Minithoracotomy-"No Touch" Technique