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)