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Evaluation of a Novel Classification of Heat-Related Illnesses: A Multicentre Observational Study (Heat Stroke STUDY 2012)

Author

Listed:
  • Takahiro Yamamoto

    (Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
    Authors contributed equally to this work.)

  • Motoki Fujita

    (Department of Acute and General Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
    Authors contributed equally to this work.)

  • Yasutaka Oda

    (Department of Acute and General Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan)

  • Masaki Todani

    (Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan)

  • Toru Hifumi

    (Emergency and Critical Care medicine, St. Luke’s International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan)

  • Yutaka Kondo

    (Department of Emergency Medicine and Critical Care Medicine, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan)

  • Junya Shimazaki

    (Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamadaoka, Suita, Osaka 565-0871, Japan)

  • Shinichiro Shiraishi

    (Department of Emergency and Critical Care Medicine, Aizu Chuo Hospital, 1-1 Tsuruga-machi, Aizuwakamatsu, Fukushima 965-8611, Japan)

  • Kei Hayashida

    (Department of Emergency and Critical Care Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan)

  • Shoji Yokobori

    (Department of Emergency and Critical Care Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan)

  • Shuhei Takauji

    (Department of Emergency Medicine, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido 078-8510, Japan)

  • Masahiro Wakasugi

    (Emergency and Critical Care Center, Toyama University Hospital, 2630, Sugitani, Toyama City, Toyama 930-0152, Japan)

  • Shunsuke Nakamura

    (Department of Emergency Medicine, Wakayama Rosai Hospital, 93-1 Kinomoto, Wakayama City, Wakayama 640-8505, Japan)

  • Jun Kanda

    (Department of Emergency Medicine, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8606, Japan)

  • Masaharu Yagi

    (Department of Emergency and Critical Care Medicine, Urasoe General Hospital, 4-16-1 Iso, Urasoe, Okinawa 901-2132, Japan)

  • Takashi Moriya

    (Department of Emergency and Critical Care Medicine, Saitama Medical Center, Jichi Medical University, 1-847 Amanuma-cho, Omiya-ku, Saitama City, Saitama 330-8503, Japan)

  • Takashi Kawahara

    (Japan Sport Council, 2-8-35 Kita-Aoyama, Minato-ku, Tokyo 107-0061, Japan)

  • Michihiko Tonouchi

    (Japan Meteorological Business Support Center, To-nen Bld, 3-17 Kanda-Nishikicho, Chiyoda-ku, Tokyo 101-0054, Japan)

  • Hiroyuki Yokota

    (Department of Emergency and Critical Care Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan)

  • Yasufumi Miyake

    (Department of Emergency Medicine, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8606, Japan)

  • Keiki Shimizu

    (Emergency and Critical Care Center, Tokyo Metropolitan Tama Medical Centre, 2-8-29 Musashidai, Fuchu-shi, Tokyo 183-8524, Japan)

  • Ryosuke Tsuruta

    (Advanced Medical Emergency and Critical Care Center, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
    Department of Acute and General Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan)

Abstract

The Japanese Association for Acute Medicine Committee recently proposed a novel classification system for the severity of heat-related illnesses. The illnesses are simply classified into three stages based on symptoms and management or treatment. Stages I, II, and III broadly correspond to heat cramp and syncope, heat exhaustion, and heat stroke, respectively. Our objective was to examine whether this novel severity classification is useful in the diagnosis by healthcare professionals of patients with severe heat-related illness and organ failure. A nationwide surveillance study of heat-related illnesses was conducted between 1 June and 30 September 2012, at emergency departments in Japan. Among the 2130 patients who attended 102 emergency departments, the severity of their heat-related illness was recorded for 1799 patients, who were included in this study. In the patients with heat cramp and syncope or heat exhaustion (but not heat stroke), the blood test data (alanine aminotransferase, creatinine, blood urea nitrogen, and platelet counts) for those classified as Stage III were significantly higher than those of patients classified as Stage I or II. There were no deaths among the patients classified as Stage I. This novel classification may avoid underestimating the severity of heat-related illness.

Suggested Citation

  • Takahiro Yamamoto & Motoki Fujita & Yasutaka Oda & Masaki Todani & Toru Hifumi & Yutaka Kondo & Junya Shimazaki & Shinichiro Shiraishi & Kei Hayashida & Shoji Yokobori & Shuhei Takauji & Masahiro Waka, 2018. "Evaluation of a Novel Classification of Heat-Related Illnesses: A Multicentre Observational Study (Heat Stroke STUDY 2012)," IJERPH, MDPI, vol. 15(9), pages 1-17, September.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:9:p:1962-:d:168577
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    References listed on IDEAS

    as
    1. Takahiro Yamamoto & Masaki Todani & Yasutaka Oda & Tadashi Kaneko & Kotaro Kaneda & Motoki Fujita & Takashi Miyauchi & Ryosuke Tsuruta, 2015. "Predictive Factors for Hospitalization of Patients with Heat Illness in Yamaguchi, Japan," IJERPH, MDPI, vol. 12(9), pages 1-11, September.
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