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Ann Thorac Surg 2001;72:959-965
© 2001 The Society of Thoracic Surgeons

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Review

Clinical and angiographic outcome of different surgical strategies of bilateral internal mammary artery grafting

^a Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom

Address reprint requests to Dr Angelini, Bristol Heart Institute, Bristol Royal Infirmary, Bristol BS2 8HW, United Kingdom
e-mail: n.holloway-dee{at}bristol.ac.uk

Long-term survival, relief of angina, and prevention of myocardial infarction after coronary revascularization are related to the preoperative status of the patient, progression of coronary artery atherosclerosis, and the patency of the conduits used. The increased use of the internal mammary artery for coronary grafting depends upon the accumulation of data on superior late patency compared with venous conduits. These data have supported the simultaneous use of both left and right internal mammary arteries with reported improved late survival. However, controversy still surrounds the clinical and angiographic outcomes of some of the surgical strategies of bilateral internal mammary artery grafting. This review examines a range of surgical strategies of bilateral internal mammary artery grafting and their mid- and long-term clinical and angiographic outcomes. From the available data, careful preoperative selection of patients is paramount. Clinical and angiographic outcome of bilateral internal mammary grafting is superior to single internal mammary grafting with supplemental vein grafts when pedicled, sequential, or free aorto-coronary internal mammary artery is used. Further studies are needed to evaluate the midterm and long-term clinical and angiographic outcomes of complex strategies such as Y or T procedures.

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