Between April 1996 through March 1999, 15 patients with severe (> 60%) left main coronary artery stenosis became hemodynamically unstable on induction of anesthesia, in spite of optimal pharmacological management. Retrograde coronary sinus perfusion was instituted soon after the median sternotomy to improve hemodynamics until the establishment of cardiopulmonary bypass after harvesting internal mammary artery and saphenous vein grafts.
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