International Society For Minimally Invasive Cardiothoracic Surgery

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Long-term Follow-up Results Of Robotic Mitral Valve Surgery
Rong Wang, Huajun Zhang, Changqing Gao.
PLA General Hospital, Beijing, China.

Background: The early and mid-term efficacy of robotic mitral valve repair has been proven in several studies but the long-term outcomes are still unclear. We aim to summarize our surgical experience with robotic mitral valve repair and demonstrate the long-term follow-up results. Methods: From 2007 to 2018, 116 consecutive patients underwent robotic mitral valve repair with da Vinci Surgical System (Intuitive Surgical, USA) in our center. The patients' average age was 4513 (14 to 70) years with male to female ratio of 2.3:1. Mitral regurgitation (98.3%) and/or stenosis (4.3%) was diagnosed. The triangular or quadrangular resection was the most performed type of repair (63.3%). Nitinol U-clips (58.1%), running suture (31.1%), and Cor-KnotTM suture device (LSI Solutions, Victor, NY) (10.8%) were used to secure the annuloplasty ring. The operative data were collected and patients were echocardiographically followed regularly up to 10 years. Results: All cases were performed by the same surgeon. One case of conversion to sternotomy was noted. One death (0.91%) and two cases of stroke (1.82%) occurred post-operatively. Three cases of early prosthetic failure (2.73%) were noticed. All patients were successfully followed for a median of 68months (range, 1 month to 7 years). The 10-year survival rate was 91.6%, with freedom from stroke rate 91.25 and freedom from re-operation of 95.18%. Conclusions: Successful robotic mitral valve repair can be achieved with various techniques with excellent long-term outcomes.


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