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 45±13 (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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