Hourly associations between ambient temperature and emergency ambulance calls in one central Chinese city: Call for an immediate emergency plan

Cui, Yingjie; Ai, Siqi; Liu, Yuying; Qian, Zhengmin; Wang, Changke; Sun, Jia; Sun, Xiangyan; Zhang, Shiyu; Syberg, Kevin M; Howard, Steven W.; Qin, Lijie; Lin, Hualiang

doi:10.1016/j.scitotenv.2019.135046

Cited by 23 publications

(59 citation statements)

References 48 publications

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“…Our results contrast with those of other studies that have also evaluated the impact of temperature on ambulance callouts, specifically in London [31], and in Luoyang (central China) [32], which found a relationship between ambulance calls for heat and cold. However, the exposure-response curve was clearly dependent on the dispatch category [31].…”

Section: Discussioncontrasting

confidence: 99%

Impact of Extreme Temperatures on Ambulance Dispatches Due to Cardiovascular Causes in North-West Spain

Romaní

Royé

Santos³

et al. 2020

IJERPH

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Introduction and objectives. The increase in mortality and hospital admissions associated with high and low temperatures is well established. However, less is known about the influence of extreme ambient temperature conditions on cardiovascular ambulance dispatches. This study seeks to evaluate the effects of minimum and maximum daily temperatures on cardiovascular morbidity in the cities of Vigo and A Coruña in North-West Spain, using emergency medical calls during the period 2005–2017. Methods. For the purposes of analysis, we employed a quasi-Poisson time series regression model, within a distributed non-linear lag model by exposure variable and city. The relative risks of cold- and heat-related calls were estimated for each city and temperature model. Results. A total of 70,537 calls were evaluated, most of which were associated with low maximum and minimum temperatures on cold days in both cities. At maximum temperatures, significant cold-related effects were observed at lags of 3–6 days in Vigo and 5–11 days in A Coruña. At minimum temperatures, cold-related effects registered a similar pattern in both cities, with significant relative risks at lags of 4 to 12 days in A Coruña. Heat-related effects did not display a clearly significant pattern. Conclusions. An increase in cardiovascular morbidity is observed with moderately low temperatures without extremes being required to establish an effect. Public health prevention plans and warning systems should consider including moderate temperature range in the prevention of cardiovascular morbidity.

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Section: Discussioncontrasting

confidence: 99%

Impact of Extreme Temperatures on Ambulance Dispatches Due to Cardiovascular Causes in North-West Spain

Romaní

Royé

Santos³

et al. 2020

IJERPH

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“…In Europe, the heatwaves of 2003 and 2010 accounted for 80% of deaths due to weather-, climate-, and water-related disasters from 1970 to 2019 [ 6 ]. Heat-related morbidity is difficult to systematically monitor due to the variety and severity of the health impacts, which range from mild illness [ 7 , 8 ] to triggering or exacerbating cardiovascular, respiratory, and cerebrovascular diseases [ 9 ]. Most studies use archives of health services such as ambulance calls, hospital emergencies, and hospital admissions [ 9 , 10 , 11 ] to examine heat-related health effects.…”

Section: Introductionmentioning

confidence: 99%

“…Heat-related morbidity is difficult to systematically monitor due to the variety and severity of the health impacts, which range from mild illness [ 7 , 8 ] to triggering or exacerbating cardiovascular, respiratory, and cerebrovascular diseases [ 9 ]. Most studies use archives of health services such as ambulance calls, hospital emergencies, and hospital admissions [ 9 , 10 , 11 ] to examine heat-related health effects. The main findings suggest that ambient heat may affect populations in both urban and rural areas [ 12 ], that individuals with pre-existing cardiovascular or respiratory medical conditions, with low socioeconomic status, the elderly, infants and children, pregnant women, outdoor workers and athletes are more vulnerable [ 13 , 14 , 15 ], and that thermal conditions at which health impacts may occur vary by region and climate [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conditions and Hospital Admissions: Analysis of Longitudinal Data from Cyprus (2009–2018)

Pantavou

Giallouros

Philippopoulos

et al. 2021

IJERPH

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The state of the thermal environment can affect human health and well-being. Heat stress is associated with a wide range of health outcomes increasing morbidity and mortality and is recognized as an important health risk posed by climate change. This study aims at examining the effect of thermal conditions on the daily number of hospital admissions in Cyprus. Data from eight public hospitals located in five districts of Cyprus were analyzed from 2009 to 2018. Meteorological hourly gridded data were extracted by the ERA-5 Land reanalysis database with a spatial horizontal resolution of 0.1° × 0.1°. The Physiologically Equivalent Temperature (PET) and the Universal Thermal Climate Index (UTCI) were calculated as measures of the integrated effect of meteorological variables. Negative binomial regression was fitted to examine associations between the daily number of hospital admissions and meteorological variables, PET, and UTCI. The results showed that the mean daily temperature (Tair) was positively associated with hospital admissions from any cause. Hospital admissions increased by 0.6% (p < 0.001) for each 1 °C increase of Tair and by 0.4% (p < 0.001) for each 1 °C increase of PET and UTCI. Ozone and nitrogen oxides act as confounding factors. An effect of particulate matter (less than 10 μm in diameter) was observed when the analysis focused on April to August. Thresholds above which hospital admissions are likely to increase include daily mean Tair = 26.1 °C, PET = 29 °C, and UTCI = 26 °C. Studies on heat-related health effects are necessary to monitor health patterns, raise awareness, and design adaptation and mitigation measures.

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“…Limited studies assessed associations between ambulance calls and ambient environment 9,13,19,[22][23][24][25][26][27] . Studies in Emilia-Romagna in Italy 23 , Brisbane in Australia 26 , Taiwan 19 , and Huainan and Luoyang in China 22,24 , have indicated the numbers of ambulance calls associated with extreme heat; the risks generally increase as the daily temperature exceeds 27 °C 19,23,26 . However, no consistent finding for cold threshold was identified 19,28 .…”

Section: Discussionmentioning

confidence: 99%

“…The daily wind speed (ws) and relative humidity (rh) were included in the model and set as the natural spline (NS) function with 4 df, respectively. Time is included in the model for controlling long-term trend and seasonality 22 . Dow is dummy variable for controlling "day of a week effect" in the model 9 .…”

Section: Statistical Models Non-linear Risk Association a Distributed Lag Non-linear Model (Dlnm) With Quasi-mentioning

confidence: 99%

Risk of ambulance services associated with ambient temperature, fine particulate and its constituents

Lin

Cheng

Kim

2021

Sci Rep

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Short-term adverse health effects of constituents of fine particles with aerodynamic diameters less than or equal to 2.5 μm (PM2.5) have been revealed. This study aimed to evaluate the real-time health outcome of ambulance services in association with ambient temperature and mass concentrations of total PM2.5 level and constituents in Kaohsiung City, an industrialized city with the worst air quality in Taiwan. Cumulative 6-day (lag0-5) relative risk (RR) and 95% confidence interval (CI) of daily ambulance services records of respiratory distress, coma and unconsciousness, chest pain, headaches/dizziness/vertigo/fainting/syncope, lying at public, and out-of-hospital cardiac arrest (OHCA) in association with ambient temperature and mass concentrations of total PM2.5 level and constituents (nitrate, sulfate, organic carbon (OC), and elemental carbon (EC)) from 2006 to 2010 were evaluated using a distributed lag non-linear model with quasi-Poisson function. Ambulance services of chest pain and OHCA were significantly associated with extreme high (30.8 °C) and low (18.2 °C) temperatures, with cumulative 6-day RRs ranging from 1.37 to 1.67 at the reference temperature of 24–25 °C. Daily total PM2.5 level had significant effects on ambulance services of lying at public and respiratory distress. After adjusting the cumulative 6-day effects of temperature and total PM2.5 level, RRs of ambulance services of lying at public associated with constituents at 90th percentile versus 25th percentile were 1.35 (95% CI: 1.08, 1.68) for sulfate and 1.20 (95% CI: 1.02, 1.41) for EC, while RR was 1.31 (95% CI: 1.09–1.58) for ambulance services of headache/dizziness/vertigo/fainting/syncope in association with OC at 90th percentile versus 25th percentile. Cause-specific ambulance services had various significant association with daily temperature, total PM2.5 level, and concentrations of constituents. Elemental carbon may have stronger associations with increased ambulance services than other constituents.

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Hourly associations between ambient temperature and emergency ambulance calls in one central Chinese city: Call for an immediate emergency plan

Cited by 23 publications

References 48 publications

Impact of Extreme Temperatures on Ambulance Dispatches Due to Cardiovascular Causes in North-West Spain

Impact of Extreme Temperatures on Ambulance Dispatches Due to Cardiovascular Causes in North-West Spain

Thermal Conditions and Hospital Admissions: Analysis of Longitudinal Data from Cyprus (2009–2018)

Risk of ambulance services associated with ambient temperature, fine particulate and its constituents

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