9. Prior coronary artery bypass graft(s) is not necessarily exclusionary. A potential candidate should be reviewed on a case-by-case basis by the treating interventionist, taking into account the dominance of the system, the accessibility of the graft(s) orifice, and the contribution of the graft vessel(s) and native coronary arteries to viable myocardial perfusion. The case and tentative infusion strategy must be discussed with the medical or safety officer prior to enrollment of the subject into the study.