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Ann Thorac Surg 2003;75:88-92
© 2003 The Society of Thoracic Surgeons

Original article: cardiovascular

Graft of choice to right coronary system in left-sided bilateral internal thoracic artery grafting

Oren Lev-Ran, MDa*, Rephael Mohr, MDa, Gideon Uretzky, MDa, Dmitry Pevni, MDa, Chaim Locker, MDa, Yosef Paz, MDa, Itzhak Shapira, MDa

a Department of Cardiothoracic Surgery, The Tel Aviv Sourasky Medical Center and The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel

Accepted for publication July 31, 2002.

* Address reprint requests to Dr Lev-Ran, Department of Cardiothoracic Surgery, The Tel Aviv Sourasky Medical Center, 6 Weizmann St, Tel Aviv 64239, Israel
e-mail: orenlevran{at}hotmail.com

BACKGROUND: The complementary graft of choice to the right coronary artery system in patients undergoing left-sided bilateral internal thoracic artery grafting has yet to be determined. Saphenous vein graft (SVG) was compared with right gastroepiploic artery (RGEA) as the supplemental conduit to the right coronary artery when left-sided bilateral internal thoracic artery grafting is implemented.

METHODS: From April 1996 to July 1999, 234 patients underwent bilateral internal thoracic artery grafting to the left coronary system with RGEA grafted to the posterior descending artery (RGEA group). They were compared with 127 patients with left-sided bilateral internal thoracic artery in whom SVG was used for grafting the right coronary system (SVG group).

RESULTS: Female sex (27% versus 14.5%), diabetic patients (40% versus 27%), emergency cases (21% versus 7.3%), and left main coronary artery disease (34% versus 23%) were more prevalent in the SVG group. Number of grafts per patient was higher in the SVG group (3.8 versus 3.5, p = 0.04). Thirty-day mortality was 3.9% in the SVG and 2.6% in the RGEA group (not significant). Occurrence of postoperative complications (myocardial infarctions, strokes, bleeding, and sternal infections) was similar. Return of angina was similar (1.6% versus 3.8% in the SVG and RGEA groups, respectively). Midterm follow-up (4 to 56 months) showed comparable 1-year and 4-year survival (Kaplan-Meier) for both groups (92.8% and 91.7% in the SVG group, and 94.7% and 88% in the RGEA group, respectively).

CONCLUSIONS: In patients undergoing left-sided bilateral internal thoracic artery grafting, the use of RGEA for revascularization of the right coronary system does not confer clinical benefits over SVG after midterm follow-up.




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