[Two cases of CABG operation using only arterial grafts for hypothyroidism patients]

CABG operation was conducted using only arterial grafts for patients with hypothyroidism. Case 1 was a 75-year-old woman in a hypothyroid state following radioactive iodine therapy for Basedow's disease. I're-operative thyroid function could not be corrected. CABG (RITA-->#7, LITA-->#14, RGEA-->#3) was thus carried out. The post-operative course was slightly unstable. Transient conduction disturbance appeared. Case 2 was a 57-year-old man with primary hypothyroidism. Pre-operative thyroid function could be corrected, and CABG (LITA-->#7, RITA-->#9, RGEA-->#4 PD) was carried out, the post-operative course was very good. CABG with only arterial graft was thus concluded applicable to the patients with hypothyroidism.