The relationship of short-term air pollution and weather to ED visits for asthma in Japan

Abe, Toshikazu; Tokuda, Yasuharu; Ohde, Sachiko; Ishimatsu, Shinichi; Nakamura, Tomohiko; Birrer, Richard B.

doi:10.1016/j.ajem.2008.01.013

Cited by 90 publications

(83 citation statements)

References 34 publications

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“…In turn, lower air temperature is also associated with severe health problems [5][6][7][8][9][10]. We have also reported that lower air temperature was associated with higher frequency of ambulance transports in Sakata area located in northern part (Tohoku area) and cold climate area in Japan [11].…”

Section: Introductionmentioning

confidence: 68%

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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Section: Introductionmentioning

confidence: 68%

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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“…Previous studies have shown that the meteorological risk factors of care visits due to asthma attack are high temperature [11,12], large changes in temperature [13,14], high atmospheric pressure [13,15], low relative humidity [13], and large changes in humidity [14]. However, these data may suffer from publication bias.…”

Section: Introductionmentioning

confidence: 90%

Association of ambient air pollution and meteorological factors with primary care visits at night due to asthma attack

Yamazaki

Shima

Yoda

et al. 2013

Environ Health Prev Med

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Aim The association of outdoor air pollution and meteorological elements with primary care visits at night due to asthma attack was studied. Methods A case-crossover study was conducted in a primary care clinic in Himeji City, Japan. The subjects were 956 children aged 0-14 years who visited the clinic with an asthma attack between the hours of 9 p.m. and 6 a.m. Daily concentrations of particulate matter, ozone, nitrogen dioxide, and a number of meteorological elements were measured, and a conditional logistic regression model was used to estimate odds ratios (ORs) of primary care visits per unit increment of air pollutants or meteorological elements. The analyses took into consideration the effects of seasonality. Results Of the 956 children, 73 (7.6 %) were aged \2 years and 417 (43.6 %) were aged 2-5 years. No association between daily ozone levels and primary care visits due to asthma attack at night in the spring or summer was found. An inverse relation between suspended particulate matter and primary care visits due to asthma attack was detected in the winter. ORs in the summer per degree increment in daily mean temperature was 1.31 [95 % confidential interval (CI) 1.09-1.56], and ORs in the autumn per hourly increment in daily hours of sunshine was 0.94 (95 % CI 0.90-0.99). Conclusion The findings of our study fail to support any association between daily mean concentration of air pollutant and primary care visits at night. However, we did find evidence indicating that certain meteorological elements may be associated with primary care visits

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“…Environmental factors, including pollutants, allergen exposure, psychological stress and weather conditions, may increase the risk of developing an acute asthma exacerbation in both children and adults [24][25][26][27][28][29][30]. The multiplicity of precipitating factors points towards a multifactorial cause, as well as potential interactions, which have been shown for some combinations of factors, such as pollutants [31,32].…”

Section: Infection Among Factors Precipitating Asthma Exacerbationsmentioning

confidence: 99%

Childhood asthma and infection: virus-induced exacerbations as determinants and modifiers: Figure 1–

Xepapadaki¹,

Papadopoulos²

2010

Eur Respir J

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Respiratory infections have been implicated in the origin and exacerbation of asthma in a variety of ways; however, systemisation of this knowledge in a way helpful for disease management remains suboptimal.Several conceptual issues need to be taken into account: the fact that the effects of an infection may vary according to genetic background, the current immune status of the host, and parallel environmental stimuli, in addition to the particular infectious agent itself. Moreover, childhood is a very special period because of the continuous processes taking place, such as neural, immune and respiratory maturation.Epidemiological studies have convincingly demonstrated that the majority of asthma exacerbations, in both adults and children, follow viral upper respiratory tract infections. Asthma exacerbations are still often unresponsive to current asthma treatment, and new therapeutic approaches are required.This review presents current knowledge on the associations between infection and exacerbation of established asthma with respect to definitions, epidemiology, mechanisms and treatment.

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The relationship of short-term air pollution and weather to ED visits for asthma in Japan

Cited by 90 publications

References 34 publications

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

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

Association of ambient air pollution and meteorological factors with primary care visits at night due to asthma attack

Childhood asthma and infection: virus-induced exacerbations as determinants and modifiers: Figure 1–

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