Clinical and experimental studies indicate that hyperthermia can cause heatstroke with cerebral ischemia and brain damage. However, no study has examined the direct effects of heating carotid artery smooth muscle and tested the hypothesis that hyperthermia induces arterial vasoconstriction and, thereby, decreases cerebral blood flow. We recorded isometric tension of rabbit carotid artery strips...

The purpose of this study was to determine whether nitric oxide (NO) contributes to the hypotensive state induced by prolonged environmental heat (EH) stress. Ketamine-anesthetized rats were instrumented for the measurement of arterial blood pressure, electrocardiogram, and temperature at four sites. Rats were exposed to EH (ambient temperature, 40 +/- 1 degrees C) until mean arterial blood pre...

Objective: To describe imaging-specific findings on the initial chest radiographs in a group of heatstroke patients. Materials and Methods: An experienced radiologist retrospectively evaluated the initial chest radiographs of 15 heatstroke patients from the September 2016 Mecca stampede. The presence of endotracheal intubation, pleural effusions, airspace opacities, interstitial opacities or br...

Heatstroke following vigorous exercise is reported in a young male. Severe hepatic and renal failure resulted but the patient completely recovered following treatment by active measures to reduce his core temperature.

In recent years, various sensors are embedded into a so-called smartphone. A human-probe community is paying great attention to a smartpohne as a sensing node because it allows users to participate sensing activity easily. However, on-body localization of a sensor is critical issue if we utilize a smartphone as a sensing platform for human-probe. For instance, acceleration, temperature or humid...

Abstract Background Heatstroke is becoming an increasingly serious threat to outdoor activities, especially, at the time of large events organized during summer, including Olympic Games or various types happenings in amusement parks like Disneyland other popular venues. The risk heatstroke naturally affected by a high temperature, but it also dependent on contextual factors such as presence sha...

The death toll by heatstroke in Japan, especially in Kanto region, has sharply increased since 1994 together with large interannual variability. The surface air temperature and humidity observed during boreal summers of 1980-2010 were examined to understand the role of climate in the death toll. The extremely hot days, when the daily maximum temperature exceeds 35 °C, are more strongly associat...

The aims of the present paper were to ascertain whether the heat-induced ischemia and oxidative damage to the hypothalamus and lethality in mice could be ameliorated by hyperbaric oxygen therapy. When normobaric air-treated mice underwent heat treatment, the fractional survival and core temperature at 4 hours after heat stress were found to be 0 of 12 and 34 degrees C +/- 0.3 degrees C, respect...

The people-centric sensing community is paying substantial attention to the smartphone as an ad hoc, low-cost, and dense sensing method because it permits people to participate easily in sensing activities, i.e., just by carrying it as usual. People carry their smartphones in various manners, rendering measurement results unreliable. For example, humidity is typically higher in a trouser pocket...

Eleven dogs with fatal heatstroke were examined grossly and histopathologically post mortem. All showed multi-organ haemorrhagic diathesis with coagulative necrosis. Hypaeremia and diffuse oedema were observed in the skin (eight dogs), lungs (11), brain (11) and bone marrow (one). Congestion of the splenic pulp (10 dogs) and hepatic sinusoids (nine) was also noted. Necrosis was observed in the ...