Genro Ochi1, Etsuo Tabo2, Shigeo Kimura2, Takumi Nagaro2, Tatsuru Arai2. 1. Emergency Clinic, Ehime University School of Medicine, Shitsukawa, Shigenobu-cho, Onsen-Gun, 791-02, Ehime, Japan. 2. Department of Anesthesiology and Resuscitology, Ehime University School of Medicine, Shitsukawa, Shigenobu-cho, Onsen-Gun, 791-02, Ehime, Japan.