Radial Artery Versus Saphenous Vein Grafts in Coronary Artery Bypass Surgery

Inclusion Criteria:

   - Patients needing coronary artery bypass grafts.

Exclusion Criteria:

   - Patients who require only a single vessel bypass and in whom the internal mammary
   artery will be used for that graft

   - Patients with previous stripping and ligation of saphenous veins and in whom no venous
   conduit is available for bypass

   - Patients with Raynaud's symptoms

   - Patients who have a creatinine above 2.0 mg/dL or require hemodialysis

   - Patients with a positive Allen test

   - Patients with cardiogenic shock

   - Patients who are unable to give consent

   - Patients allergic to contrast material

   - Patients undergoing repeat CABG or any form of robotic surgery

   - Patients who do not have full use of both arms

   - Patients who are pregnant

   - Patients with neurologic or musculoskeletal disease affecting the arm

   - Patients who refuse to participate

   - Patient requires any concomitant valve operation in the mitral, aortic, or pulmonary
   position. Isolated tricuspid annuloplasty is acceptable, but tricuspid valve
   replacement excludes the patient from consideration.

   - Patient requires concomitant Dor or Maze procedure

   - Patient is in another research study

   - No suitable radial target (there is no non-LAD vessel with a >70% stenosis)