title: Collateralization of an occluded left internal mammary artery coronary bypass graft.
abstract: The left internal mammary artery (LIMA) is frequently utilized in coronary artery bypass grafting (CABG); adequate visualization of the LIMA bypass graft during diagnostic angiography is critical for determination of myocardial blood supply. We present a novel case of angiography via a left transradial approach demonstrating an occluded LIMA coronary bypass graft with antegrade flow maintained via a collateral branch from the ipsilateral thyrocervical trunk. Given the prevalence of LIMA use in CABG, it is critical to be aware of unusual configurations, including collateralization of a proximally occluded LIMA graft as described in this report.
authors: Division of Cardiovascular Diseases, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA.
authors: Jeffrey B
authors: JB
authors: Geske
authors: Gregory W
authors: GW
authors: Barsness
authors: Rajiv
authors: R
authors: Gulati
mesh_terms: D000368:Aged; D000792:Angiography; D015906:Angioplasty, Balloon, Coronary; D003097:Collateral Circulation / Q000502:physiology*; D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000379:methods; D003324:Coronary Artery Disease / Q000601:surgery; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D008297:Male; D008323:Mammary Arteries / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000637:transplantation; D016896:Treatment Outcome