Takeshi Yano1, Masahiko Taniguchi2, Isao Tsuneyoshi2. 1. Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan. yanotake@med.miyazaki-u.ac.jp. 2. Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan.