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Ann Thorac Surg 2004;78:154-158
© 2004 The Society of Thoracic Surgeons

Original article: cardiovascular

Results of a phase one study on robotically assisted myocardial revascularization on the beating heart

J.W. Randolph Bolton, MDa*, Jackie E. Connally, SFA/CSTa

a Carolina Heart Institute, Greenwood, South Carolina, USA

Accepted for publication January 22, 2004.

* Address reprint requests to Dr Bolton, 303 W Alexander Ave, Ste E PO Box 3284, Greenwood, SC 29648, USA
e-mail: rbolton{at}carolinaheartinstitute.com

Presented at the Fiftieth Annual Meeting of the Southern Thoracic Surgical Association, Bonita Springs, FL, Nov 13–15, 2003.

BACKGROUND: The objective of this study was to evaluate the feasibility of computer assisted myocardial revascularization on the beating heart.

METHODS: Ten patients underwent at least one robotically assisted internal mammary artery (IMA) anastomosis utilizing the da Vinci surgical system (Intuitive Surgical, Inc, Mountain View, CA) performed through an open incision as part of standard multivessel off pump revascularization. Following chest closure a selective IMA angiogram was performed to assess patency. Three month follow-up included a stress echocardiogram.

RESULTS: There were 12 anastomoses performed in 10 patients. The average age was 61 years with a mean ejection fraction of 56%. No patient required inotropic support. Eight of 10 patients were found to have fully patent IMA anastomoses by angiogram. One patient was noted to have an occluded left anterior descending coronary artery distal to the anastomosis and one had occlusion at the anastomosis. Both patients had immediate manual revision of the anastomosis. One patient who required anastomotic revision experienced postoperative myocardial infarction and sternal wound infection requiring pectoralis flaps.

CONCLUSIONS: Because robotic instrumentation is meant for closed chest procedures, there were major issues with positioning of the robotic arms in this study since the chest was open. Although two patients required anastomotic revision, there were no complications or technical failures related to the robotic system. Thus, based upon this study robotically assisted beating heart revascularization appears to be feasible, safe, and effective. Further evaluation will be necessary to determine the role of robotically assisted totally endoscopic coronary artery bypass on the beating heart in the United States.






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