Spyder™ Proximal Coronary Vein Graft Patency over Time: The SPPOT Study
Background: Clampless proximal anastomoses are associated with fewer strokes in coronary artery bypass (CAB) graft surgery, but lack of patency of proximal grafts has been an issue. The Spyder™ (Medtronic, Minneapolis, MN, USA) is an "exoconnector" device that deploys a nitinol clamping mechanism to attach a vein onto the aortotomy and create the proximal anastomosis.
Methods: During a 22-month period we performed gated cardiac computed tomographic angiography on 38 patients who underwent off-pump CAB.
Results: Of the 49 proximal anastomoses created with the Spyder™, 44 (90%) remained patent at the time of study, with a mean follow-up period of 16.7 months.
Conclusions: The use of the Spyder™ exoconnector to create a clampless proximal anastomosis during off-pump CAB surgery is a reasonable strategy to improve graft patency.
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