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Ann Thorac Surg 1997;64:1725-1727
© 1997 The Society of Thoracic Surgeons

Original Articles: Cardiovascular

Intraoperative Angiography During Minimally Invasive Direct Coronary Artery Bypass Operations

Robert R. Lazzara, MD, Bruce A. McLellan, MD, Francis E. Kidwell, BS, D. Thomas Combs, MD, J. Timothy Hanlon, MD, Eddy K. Young, MD

Division of Cardiac Services, St. Charles Medical Center, Bend, Oregon

Accepted for publication June 11, 1997.

Background. The technical demands of beating heart operations raise concerns about anastomotic patency. This feasibility study tested the usefulness of intraoperative angiography during minimally invasive direct coronary artery bypass grafting (MIDCABG).

Methods. Ten patients underwent intraoperative angiography of the internal thoracic artery (ITA) after MIDCABG. Minimally invasive direct coronary artery bypass grafting was performed on a beating heart through the fourth or fifth intercostal space. Angiography was performed through the right or left femoral artery with a 7F introducer system placed before the operation. Views were obtained in the right and left anterior oblique and straight anterior projections.

Results. There were no deaths or intraoperative morbidities related to MIDCABG or angiography. Seven patients demonstrated widely patent MIDCABG anastomoses with obliteration of all intercostals, widely patent ITA pedicles, good distal runoff, and placement of the ITA into the proper native coronary artery. Two patients had revisions of their ITA pedicles, which on repeated angiography showed correction. One patient's procedure was converted to a sternotomy because of poor distal runoff and haziness at the level of the MIDCABG anastomosis.

Conclusions. This feasibility study demonstrates the utility of intraoperative ITA angiography in identifying problems after MIDCABG. Intraoperative angiography may facilitate MIDCABG by documenting proper placement of conduits, obliteration of intercostal vessels, and patency of the MIDCABG anastomosis and ITA pedicle.


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