Carbon monoxide and stroke: A time series study of ambient air pollution and emergency hospitalizations

Tian, Linwei; Qiu, Hong; Pun, Vivian C.; Ho, Kin-Fai; Chan, C. Y.; Yu, Ignatius Tak-sun

doi:10.1016/j.ijcard.2015.07.099

Cited by 42 publications

(26 citation statements)

References 38 publications

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“…However, Tian et al (2015) found that low environmental CO was associated with reduced risk of daily stroke hospitalizations [10]. In this study, an almost linear exposure-response relationship of stroke admissions at higher concentrations of CO was observed with a threshold value.…”

Section: Discussionmentioning

confidence: 48%

“…Two-pollutant models adjusting PM 2.5 were fitted to check the modifying effect of PM 2.5 on associations of gaseous air pollutants and stroke admissions. We tested the statistical significance of subgroup differences through Z test [10]. …”

Section: Methodsmentioning

confidence: 99%

“…For carbon monoxide (CO) and ozone, studies reported inconsistent results [10,11,12,13]. For example, Tian et al (2015) found that low environmental CO was associated with reduced risk of daily stroke admissions [10] and Männistö et al (2015) observed decreased odds of stroke events with exposure to ozone [12]. These findings suggest that there may be a non-linear exposure-response relationship which was not well researched.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gaseous Air Pollution and the Risk for Stroke Admissions: A Case-Crossover Study in Beijing, China

Huang

Luo

Tan³

et al. 2017

IJERPH

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Background: Though increasing evidence supports association between gaseous air pollution and stroke, it remains unclear whether the effects differ in season, sex and age. The aim of this study was to examine the associations of gaseous air pollution with stroke admissions in Beijing, 2013–2014 in different subgroups. Methods: Case-crossover design and conditional logistic regression were used to perform the analyses. We examined the exposure-response relationship between air pollution and stroke. Stratified analyses were performed in different seasons, sex, and age groups. Results: There were 147,624 stroke admissions during the study period. In the whole study period, percent changes of stroke admissions were 0.82% (95% CI: 0.52% to 1.13%) and 0.73% (95% CI: 0.44% to 1.03%) per 10 μg/m3 increase in the same day conentration of nitrogen dioxide (NO2) and sulfur dioxide (SO2). The positive associations were higher in warm seasons and with patients >65 years (p < 0.05). Contrary effects of carbon monoxide (CO) and ozone on stroke admissions were observed in different seasons. Conclusions: NO2 and SO2 were positively associated with stroke admissions, with stronger effects in warm seasons and with patients >65 years. The associations of CO and ozone with stroke admissions differed across seasons.

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Section: Discussionmentioning

confidence: 48%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gaseous Air Pollution and the Risk for Stroke Admissions: A Case-Crossover Study in Beijing, China

Huang

Luo

Tan³

et al. 2017

IJERPH

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“…There is a slightly anomalous result with 125 kg/h CO 2 enhancement at 70kW for which there was also a low standard deviation of 0.14. On the test date all results of CO were 2-3ppm higher than other dates, this may be due to an unusual concentration in the fuel, or more likely there were slightly raised ambient levels of CO, such a value would not be exceptional [24,25].…”

Section: Emissions Impactmentioning

confidence: 82%

Impact of CO2-enriched combustion air on micro-gas turbine performance for carbon capture

Best

Finney

Ingham

et al. 2016

Energy

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“…[66] Consistent with these findings, Tian et al, recently reported a negative association between short-term CO exposure and emergency stroke hospitalizations. [67] By contrast, a recent meta-analysis demonstrated increased hospital admissions secondary to CO exposure. [50] Further study is warranted.…”

Section: Air Pollution and Strokementioning

confidence: 99%

Clinical effects of air pollution on the central nervous system; a review

Babadjouni

Hodis

Radwanski

et al. 2017

Journal of Clinical Neuroscience

147

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The purpose of this review is to describe recent clinical and epidemiological studies examining the adverse effects of urban air pollution on the central nervous system (CNS). Air pollution and particulate matter (PM) are associated with neuroinflammation and reactive oxygen species (ROS). These processes affect multiple CNS pathways. The conceptual framework of this review focuses on adverse effects of air pollution with respect to neurocognition, white matter disease, stroke, and carotid artery disease. Both children and older individuals exposed to air pollution exhibit signs of cognitive dysfunction. However, evidence on middle-aged cohorts is lacking. White matter injury secondary to air pollution exposure is a putative mechanism for neurocognitive decline. Air pollution is associated with exacerbations of neurodegenerative conditions such as Alzheimer’s and Parkinson’s Diseases. Increases in stroke incidences and mortalities are seen in the setting of air pollution exposure and CNS pathology is robust. Large populations living in highly polluted environments are at risk. This review aims to outline current knowledge of air pollution exposure effects on neurological health.

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Carbon monoxide and stroke: A time series study of ambient air pollution and emergency hospitalizations

Abstract: Short-term exposure to ambient CO was associated with decreased risk of emergency hospitalizations for stroke, suggesting some acute protective effects of CO exposure against stroke onsets.

Cited by 42 publications

References 38 publications

Gaseous Air Pollution and the Risk for Stroke Admissions: A Case-Crossover Study in Beijing, China

Gaseous Air Pollution and the Risk for Stroke Admissions: A Case-Crossover Study in Beijing, China

Impact of CO2-enriched combustion air on micro-gas turbine performance for carbon capture

Clinical effects of air pollution on the central nervous system; a review

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