Effects of coronary artery bypass grafting using internal mammary arteries for diabetic patients
Takashi Hirotani, MDa,
Tadashi Kameda, MDa,
Takayuki Kumamoto, MDa,
Shogo Shirota, MDa and
Mototugu Yamano, MDa
a Department of Cardiovascular Surgery, Tokyo Saiseikai Central Hospital, Tokyo, Japan

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Figure 1 Overall survival curves, cardiac deathfree curves and cardiac eventfree curves were compared by using the KaplanMeier method between nondiabetic and diabetic patients. DM = diabetes mellitus.
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Figure 2 Overall survival curves, cardiac deathfree curves and cardiac eventfree curves in nondiabetic patients were compared according to conduits used for coronary revascularization. Internal mammary artery (IMA) grafts conferred no long-term benefit to nondiabetic patients.
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Figure 3 Overall survival curves, cardiac deathfree curves and cardiac eventfree curves in diabetic patients were compared according to conduits used for coronary revascularization. In each of these curves, it was demonstrated that diabetic patients who underwent coronary artery bypass grafting with at least one internal mammary artery (IMA) graft received significantly more benefit than those with saphenous veins alone (p < 0.01).
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