Novadaq Technologies Inc. announced that research findings from an independent multi-center study have verified that heart surgeons are able to immediately view the effectiveness of the bypass grafts through the use of the company’s SPY System during heart surgery. The research presentation called "New Technology: Real-time Intra-operative Visual Assessment of Coronary Artery Bypass Graft (CABG) Patency," was presented at the American Heart Association's 7th Scientific Forum on Quality of Care and Outcomes Research in Cardiovascular Disease and Stroke, in Washington, D.C., May 7-9.
For the independent study, a total of 157 patients underwent elective, or urgent CABG surgery at five top U.S. heart surgery programs. During the 478 bypasses performed, there were no system, or dye-related complications and the surgeons report the learning curve for interpreting the images was short, and led to appropriate and effective bypass revisions.
"The data obtained from this initial study will provide important information to improve the quality of bypass surgery," said Mitchell Magee, MD, coordinator and principal investigator of the study and researcher with the Cardiopulmonary Research Science & Technology Institute (C.R.S.T.I.), in Dallas.
Heart experts understand the need for further research to determine the factors of failure and durability in vein grafts. Technology to assess bypass grafts during surgery, such as the SPY Intra-operative Imaging System, is an important advancement in cardiac surgery, Novadaq said.
"The purpose of the study was to determine if the SPY System is safe, straightforward and easy to use, and whether it provides for immediate assessment of graft effectiveness and can be used to evaluate distal perfusion quality after revascularization," said Michael Mack, MD, chairman, C.R.S.T.I. and medical director of Cardiovascular Disease and Transplantation, Medical City Hospital of Dallas. "These results are very encouraging. Intra-operative Fluorescence Imaging graft patency and perfusion assessment has the potential to become a quality metric for bypass surgery."