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(Circulation. 1974;49:63.)
© 1974 American Heart Association, Inc.

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Gas Endarterectomy of Right Coronary Artery

The Importance of Proximal Bypass Graft

JACK H. KLIE M.D.¹; LEWIS JOHNSON M.D.¹; HAROLD SMULYAN M.D.¹; JAMES L. POTTS M.D.¹; ANIS I. OBEID M.D.¹; C. THOMAS FRUEHAN M.D.¹; ROBERT H. EICH M.D.¹; FREDERICK B. PARKER M.D.¹; WATTS R. WEBB M.D.¹

¹ From the Departments of Medicine and Surgery, State University of New York Upstate Medical Center, Syracuse, New York.

Results of gas endarterectomy of the right coronary artery were evaluated in 29 consecutive patients. There were one surgical and two early postsurgical deaths. All three had postmortem examination, and in two there was occlusion of the gas endarterectomy. Five patients did not have repeat catheterization. Twenty-one patients were completely re-evaluated and had repeat cardiac catheterization one to sixteen months after surgery (mean eight months). Ten patients (Group A) had gas endarterectomy without a saphenous vein graft to the right coronary artery. Only one patient had significant vessel patency. Eleven patients (Group B) had the combined procedure of a saphenous vein graft anastomosed to the segment of artery that had the endarterectomy. There was excellent graft patency in seven patients (64%) and good distal flow into the segment that had endarterectomy in six of the seven patients. In conclusion, gas endarterectomy is not of value unless it can be combined with a saphenous vein graft to provide good flow to the distal vessel that had endarterectomy. Results with the combined procedure suggest that even with a severely diseased artery, gas endarterectomy can often provide continuing distal runoff for the graft.

Key Words: Graft patency • Coronary artery disease

Submitted on June 26, 1973
Accepted on August 24, 1973

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