Objective: We evaluated the outcomes of minimally invasive mitral valve surgery via a right anterior thoracotomy approach in patients with isolated severe mitral regurgitation and severely reduced left ventricular systolic function.
Methods: We retrospectively reviewed all minimally invasive mitral valve surgeries for mitral regurgitation in patients with an ejection fraction of 35% or less performed at our institution between December 2008 and June 2011. The operative times, lengths of stay, postoperative complications, and mortality were analyzed.
Results: We identified a total of 71 patients with severe mitral regurgitation and an ejection fraction of 35% or less who underwent minimally invasive mitral valve surgery. The mean ± SD age was 67 ± 10 years, and 44 of the patients were men (62%). The mean ± SD left ventricular ejection fraction was 27% ± 6%, and 28 patients (39%) had previous heart surgery. The median aortic cross-clamp and cardiopulmonary bypass times were 62 [interquartile range (IQR), 50–80) and 98 minutes (IQR, 92–124), respectively. There was no mitral regurgitation noted in any patient on postoperative transesophageal echocardiogram. The median intensive care unit length of stay was 51 hours (IQR, 42–86), and the median postoperative length of stay was 6 days (IQR, 5–9).
Conclusions: Minimally invasive mitral valve surgery for severe functional mitral regurgitation in patients with severe left ventricular dysfunction can be performed with a low morbidity and mortality.
From the *Division of Cardiac Surgery at Mount Sinai Heart Institute, Miami Beach, FL USA.
Accepted for publication January 28, 2013.
Disclosure: The authors declare no conflict of interest.
Address correspondence and reprint requests to Orlando Santana, MD, Echocardiography Laboratory, Mount Sinai Heart Institute, 4300 Alton Rd, Miami Beach, FL 33140 USA. E-mail: firstname.lastname@example.org.