text: The safety of coronary artery bypass graft surgery is based on a number of things, including:\n1. Patient's age\n2. Patient's overall condition\n3. Concommitent illnesses (ie: diabetes mellitus, h/o stroke)\n4. Number of bypasses that need to be performed\n5. Any other procedures that need to be performed at the same time (ie: replace or repair a heart valve)\n6. Kidney function\n7. Experience of the surgeon\n\nThe surgeon that is performing the procedure can give an individualized risk assessment based on these and many other factors.