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- Title
高齢者の熱中症が室内で発症し得る室温のIoT を用いた観察研究.
- Authors
山下 駿; 多胡雅毅; 織田良正; 織田正道; 山下秀一
- Abstract
A wet-bulb globe temperature (WBGT) of greater than 28℃ reportedly increases the incidence of heat stroke; however, it is difficult to apply WBGT in common household settings owing to the complexity of calculation. Thus, when making assessments, it is preferable to employ usual room temperature, which is simpler and easier to apply. The ideal usual indoor temperature for preventing heat stroke remains to be clarified ─ despite the recommended room temperature of 28℃ set by Japan's Ministry of the Environment; that temperature was actually decided to help mitigate global warming. The present investigation was a single-hospital-based prospective observational study to determine the ideal room temperature to prevent heat stroke indoors. It did so by clarifying the proportion of hours of the day with WBGT ≥ 28℃ in the rooms of patients aged ≥ 65 years receiving home-visit nursing care who were prone to heat stroke. In all, 59 patients were enrolled (three patients dropped out). To calculate WBGT, electrical sensors under control of the Internet of Things were installed to monitor the indoor temperature and humidity of each participant's bedroom every 5 minutes for 14 days. The proportion of hours of the day with WBGT ≥ 28℃ was 0% with a room temperature under 26℃, 18.4% with that of 26℃ -27℃, 38.9% with that 27℃-28℃ and over 68.0% with that over 28℃. This finding suggests that the recommended room temperature to prevent heat stroke in older patients is under 26℃.
- Publication
Japanese Journal of Biometeorology, 2021, Vol 57, Issue 2, p95
- ISSN
0389-1313
- Publication type
Article
- DOI
10.11227/seikisho.57.95