Patch repair for the seagull deformity of a sequential diamond-shaped coronary anastomosis

Abstract

Seagull deformity (Figure 1, A) is the most frequent and feared complication of sequential diamond-shaped coronary anastomoses.1 Its threat is a turbulence flow that may trigger clot formation within the graft. The main cause of the seagull deformity is too-long incision of a target coronary artery, which leads to the transverse tension of the graft with its flattening and kinking at the anastomosis. In addition, the position of the target coronary artery deep in the myocardium and stiffness of its wall may amplify the impact of the excessive incision length.