Background: Details are provided of the authors' four-year experience with minimally invasive aortic valve replacement (AVR) through a right mini-thoracotomy, using totally central cannulation.
Methods: Between November 2011 and October 2014, a total of 248 patients (143 males, 105 females; mean age 72.6 ± 11.5 years; range: 29-93 years) underwent isolated AVR through a right anterior mini-thoracotomy with total arterial and venous central cannulation.
Results: AVR was performed through a 4- to 6-cm skin incision at the third intercostal space. The overall cardiopulmonary bypass time was 60.4 ± 16.7 min, and the aortic cross-clamp time 47.5 ± 14.1 min. A biological prosthesis was implanted in 242 patients (97.6%), using running sutures. The median intensive care unit and hospital stays were 40.5 h (IQR 24.6) and six days (IQR 6.0), respectively. In-hospital mortality was 1.2% (3/248); among 86 patients operated on during 2014 the hospital mortality was zero.
Conclusions: AVR performed via a right mini-thoracotomy with total central cannulation provided encouraging results. Adequate surgeon experience, in addition to technical expedience, are of utmost importance as demonstrated by the progressive and steady reduction in operating times. This approach may become highly competitive to a standard full sternotomy, and could become the 'new gold standard' for aortic valve surgery in the near future.
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