Evaluation of a Novel Classification of Heat-Related Illnesses: A Multicentre Observational Study (Heat Stroke STUDY 2012).
Takahiro YamamotoMotoki FujitaYasutaka OdaMasaki TodaniToru HifumiYutaka KondoJunya ShimazakiShinichiro ShiraishiKei HayashidaShoji YokoboriShuhei TakaujiMasahiro WakasugiShunsuke NakamuraJun KandaMasaharu YagiTakashi MoriyaTakashi KawaharaMichihiko TonouchiHiroyuki YokotaYasufumi MiyakeKeiki ShimizuRyosuke TsurutaPublished in: International journal of environmental research and public health (2018)
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.
Keyphrases
- heat stress
- end stage renal disease
- machine learning
- ejection fraction
- atrial fibrillation
- chronic kidney disease
- public health
- randomized controlled trial
- early onset
- liver failure
- study protocol
- extracorporeal membrane oxygenation
- peritoneal dialysis
- depressive symptoms
- brain injury
- subarachnoid hemorrhage
- cross sectional
- peripheral blood
- big data