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1 From the Department of Radiology, Cardiopulmonary Unit of the Department of Medicine, and the Department of Surgery, University of Rochester Medical Center and Strong Memorial Hospital, Rochester, New York
Two cases of acute iatrogenic occlusion of the internal mammary artery have been studied, showing maintenance of flow into the distal vessel through an extensive collateral circulation. Thus, after Vineberg type implants for treatment of ischemic heart disease, blood may flow into the myocardium despite proximal thrombosis or occlusion of the internal mammary artery. When occlusion of the internal mammary artery implant is suspected, arteriography of the subclavian artery, rather than selective internal mammary studies, are recommended.
We believe that the internal mammary artery is prone to injury by catheter manipulation and recommend caution in selective studies.
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