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Grafts for Left Main Trunk Lesion Using "MIDCAB Doughnut" on Beating Heart

Department of Cardiovascular Surgery Chigasaki Tokushukai Hospital Kanagawa, Japan 1 Department of Surgery I Toyama Medical and Pharmaceutical University Toyama, Japan

For reprint information contact: Masao Takahashi, MD Tel: 81 467 85 1122 Ext. 349 Fax: 81 467 83 9798 email: airdonut{at}nifty.com Department of Cardiovascular Surgery, Chigasaki Tokushukai Hospital, 14-1 Saiwai-cho, Chigasaki, Kanagawa 253-0052, Japan.

Successful beating heart multiple bypass grafting to the left anterior descending and circumflex artery for a left main trunk lesion was performed in 5 patients through a left thoracotomy using the "MIDCAB doughnut" for immobilization and hemostasis. After completion of left internal thoracic artery-to-left anterior descending artery grafting, a radial artery or saphenous vein graft was anastomosed safely to the obtuse marginal branch, without hemodynamic deterioration. Extending the left anterior small thoracotomy 3 or 4 cm laterally, the obtuse marginal branch could be approached easily without rotating the beating heart. The device achieved a still and stable operative field even for circumflex grafting. An inflow of the graft to the circumflex was placed at the left axillary artery to prevent blood flow shortage to the left coronary system. Mean perioperative blood flow was 29.5 ± 7.1 mL•min^–1 in the internal thoracic artery grafts and 43 ± 8 mL•min^–1 in the circumflex grafts. Postoperative angiography revealed patency of all grafts. The technique may extend the surgical indications for beating heart bypass surgery without cardiopulmonary bypass.