Changes in Air Temperature and Its Relation to Ambulance Transports Due to Heat Stroke in All 47 Prefectures of Japan

Murakami, Shoko; Miyatake, Nobuyuki; Sakano, Noriko

doi:10.3961/jpmph.2012.45.5.309

Cited by 19 publications

(17 citation statements)

References 9 publications

(15 reference statements)

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“…This finding is consistent with previous reports that risk for heat illness is a function of ambient temperature, relative humidity, wind speed, and solar radiant heat (Yu et al 2012; Murakami et al 2012). In addition, the geographical differences in the incidence rates of ED visits for heat stroke also support the relation between ambient temperature and heat stroke.…”

Section: Discussionsupporting

confidence: 93%

Emergency Department Visits for Heat Stroke in the United States, 2009 and 2010

Brady

Rosenberg

et al. 2014

Inj. Epidemiol.

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BackgroundThe effect of extreme heat on health has become a growing public health concern due to climate change. We aimed to examine the epidemiological patterns of hospital-based emergency department (ED) visits for heat stroke in the United States.FindingsWe analyzed data from the 2009 and 2010 Nationwide Emergency Department Sample, the largest ED data system sponsored by the Agency for Healthcare Research and Quality. ED visits for heat stroke were identified by screening the recorded diagnoses using the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code 992.0. Annual incidence rates of ED visits for heat stroke were computed according to demographic characteristics and geographic regions. In 2009 and 2010, there were an estimated 8,251 ED visits for heat stroke in the United States, yielding an annual incidence rate of 1.34 visits per 100,000 population (95% Confidence Interval [CI] = 1.23-1.45). Significantly higher incidence rates were found in males (1.99 per 100,000; 95% CI = 1.82-2.16), adults aged ≥ 80 years (4.45 per 100,000; 95% CI = 3.73-5.18), and residents living in the southern region (1.61 per 100,000; 95% CI = 1.43-1.79). The majority (63.1%) of ED visits for heat stroke occurred during the summer months of June, July and August. Over one-half (54.6%) of the ED visits for heat stroke required hospitalization and 3.5% of the patients died in the ED or hospital.ConclusionsHeat stroke results in approximately 4,100 ED visits each year in the United States, with the majority occurring in the summer months and requiring admission to the hospital. Men, the elderly, and people living in the south region are at heightened risk.Electronic supplementary materialThe online version of this article (doi:10.1186/2197-1714-1-8) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 93%

Emergency Department Visits for Heat Stroke in the United States, 2009 and 2010

Brady

Rosenberg

et al. 2014

Inj. Epidemiol.

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“…Therefore, there was a discrepancy between higher air temperature-related ambulance transports and the number of death, suggesting that higher ambulance transports may not be directly related to death. It is well known that higher ambulance transports due to heat stroke are closely linked to higher air temperature [1,2]. However, in fact, the number of death due to heat stroke in Japan was reported to be only 1,718 subjects in 2010 [17].…”

Section: Discussionmentioning

confidence: 99%

“…We have previously reported that higher air temperature was closely associated with higher ambulance transports due to heat stroke by ecological study [1,2]. In Takamatsu area, located on the northern shore of Shikoku Island, Japan, changes in mean air temperature were estimated 1.8°C for 50 years [3], and higher air temperature was closely linked to higher total ambulance transports by using monthly data [4].…”

Section: Introductionmentioning

confidence: 92%

Lower air temperature is associated with ambulance transports and death in Takamatsu area, Japan

Mochimasu

Miyatake

Tanaka

et al. 2014

Environ Health Prev Med

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Objective The aim of this study was to investigate the linkage among ambulance transports, the number of death and air temperature in Takamatsu area, Japan. Methods Monthly data of ambulance transports (total and acute disease) and the number of death from 2004 to 2012 were obtained from Fire Department Service in Takamatsu and Takamatsu city official website, Japan. Climate parameters for required period were also obtained from Japan Meteorological Agency. Population data in Takamatsu area were also used to adjust ambulance transports and the number of death. The linkage among ambulance transports, the number of death and climate parameters was evaluated by ecological analysis. Results Total ambulance transports (/a hundred thousand people/day) and ambulance transports due to acute disease (/a hundred thousand people/day) were 12.3 ± 0.9 and 6.8 ± 0.7, respectively. The number of death (/a hundred thousand people/day) was 2.5 ± 0.4. By quadratic curve, ambulance transports due to acute disease and the number of death were significantly correlated with the parameters of air temperature. However, the number of death was the highest in January and the lowest in August.Conclusion Although higher air temperature was only associated with higher ambulance transports, lower air temperature was associated with both higher ambulance transports and the number death in Takamatsu area, Japan.

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“…In recent years, as the temperature in summer rises with global warming, the risk of heatstroke during outdoor work and exercise is increasing [1], [2]. To prevent heatstroke and the accidents caused by it, it is important to develop technology to predict the onset of heatstroke for people who have to stay outside on hot days.…”

Section: Introductionmentioning

confidence: 99%

Spiky Burst of High Frequency Heart Rate Variability: A Prodromal Sign of Syncope Accompanying Heatstroke

Yuda

Iino

Yoshida³

et al. 2019

IJESD

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Heart rate variability in Holter electrocardiogram (ECG) that incidentally recorded the onset process of heatstroke during golf play was analyzed in comparison to control ECGs in the same subject and in a healthy control group. During playing golf normally, the amplitude of high-frequency (HF) component, known as an index of cardiac parasympathetic function, was suppressed (4.3 ± 2.2 ms). Whereas, 135 min before the onset of syncope, spiky HF bursts (amplitude ~10 ms and width <60 s) appeared repeatedly at an interval of 10-15 min and the burst amplitude increased to 20-30 ms from 51 min before to the onset of syncope. No such phenomenon was observed in control ECGs even during walking exercise. Although spiky HF burst was observed 30% of subjects in control group, none of them showed repetitive burst during short period <15 min. Repetitive spiky HF burst may be a prodromal sign for predicting heatstroke from heartbeat information.

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Changes in Air Temperature and Its Relation to Ambulance Transports Due to Heat Stroke in All 47 Prefectures of Japan

Cited by 19 publications

References 9 publications

Emergency Department Visits for Heat Stroke in the United States, 2009 and 2010

Emergency Department Visits for Heat Stroke in the United States, 2009 and 2010

Lower air temperature is associated with ambulance transports and death in Takamatsu area, Japan

Spiky Burst of High Frequency Heart Rate Variability: A Prodromal Sign of Syncope Accompanying Heatstroke

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