Do Saharan Dust Days Carry a Risk of Hospitalization From Respiratory Diseases for Citizens of the Canary Islands (Spain)? / ¿Los días de calima sahariana conllevan un riesgo de hospitalización por enfermedades respiratorias para los ciudadanos de las Islas Canarias, España?

Background: Saharan dust meets the Canary Islands at the beginning of its westward path across the North Atlantic, exceeding the European daily levels for PM10; for this reason, their two provincial capital cities, constitute optimal sites where to evaluate the health effects of this natural event. Objectives: To assess the short-term association between Saharan Dust Days (SDDs) and respiratory morbidity in the two capital cities. Methods: We carried out a time-series analysis with daily emergency hospital admissions due to all respiratory system diseases, chronic obstructive pulmonary disease (COPD) and asthma between 2001 and 2005, assessing the independent effect of SDDs, defined according to the application of the methodology accepted by the European Environmental Office. We also examined accumulated effect, and some other specific SDDs’ features. Results: We found a short-term association between SDDs and the increase in admission risk for the three outcomes during concurrent SDDs, compared to non-SDDs, that spread from 0 to 5th day: 22.6% (95% confidence interval [CI], 10.4, 36.0) for all respiratory diseases and 29.9% (95%CI: 6.6, 58.4) for COPD in Santa Cruz de Tenerife, and 33.4% (95%CI: −2.1,82.0) for asthma in Las Palmas de Gran Canaria. We obtained a robust association when Saharan dust transported at low altitude, when SDDs belonged to long episodes (≥5days), from the fifth SDD onwards and those SDDs with medium (50

Contexto general: El polvo del Sahara se encuentra con las Islas Canarias al comienzo de su viaje en dirección oeste atravesando el Atlántico Norte; esto hace que se superen los niveles límite diarios europeos de PM10. Por este motivo, sus 2 capitales de provincia constituyen entornos óptimos para evaluar los efectos de este fenómeno natural en la salud. Objetivos: Evaluar la asociación a corto plazo entre los días de calima sahariana (DCS) y la morbilidad respiratoria en las 2 ciudades. Métodos: Llevamos a cabo un análisis de series temporales con los ingresos hospitalarios urgentes diarios debido a todas las enfermedades del sistema respiratorio, enfermedad pulmonar obstructiva crónica (EPOC) y asma entre 2001 y 2005, evaluando el efecto independiente de los DCS, que definimos siguiendo la aplicación de la metodología aceptada por la Oficina Europea del Medio Ambiente. También estudiamos el efecto acumulado y otras características específicas de los DCS. Resultados: Encontramos una asociación a corto plazo entre los DCS y el aumento en el riesgo de ingreso para las 3 variables durante los DCS concurrentes, en comparación con los no DCS, que se extendía desde 0 a los 5 días: 22,6% (intervalo de confianza [IC] del 95%: 10,4-36,0) para todas las enfermedades respiratorias, el 29,9% (IC 95%: 6,6-58,4) para la EPOC en Santa Cruz de Tenerife y el 33,4% (IC 95%: −2,1-82,0) para asma en Las Palmas de Gran Canaria. Obtuvimos una asociación fuerte cuando el polvo del Sahara se transportaba a baja altitud, cuando los DCS formaban parte de episodios largos (≥5 días), desde el quinto DCS en adelante y aquellos DCS con niveles de PM10 medios (50

Do Saharan Dust Days Carry a Risk of Hospitalization From Respiratory Diseases for Citizens of the Canary Islands (Spain)?

BACKGROUND: Saharan dust meets the Canary Islands at the beginning of its westward path across the North Atlantic, exceeding the European daily levels for PM10; for this reason, their two provincial capital cities, constitute optimal sites where to evaluate the health effects of this natural event. OBJECTIVES: To assess the short-term association between Saharan Dust Days (SDDs) and respiratory morbidity in the two capital cities. METHODS: We carried out a time-series analysis with daily emergency hospital admissions due to all respiratory system diseases, chronic obstructive pulmonary disease (COPD) and asthma between 2001 and 2005, assessing the independent effect of SDDs, defined according to the application of the methodology accepted by the European Environmental Office. We also examined accumulated effect, and some other specific SDDs' features. RESULTS: We found a short-term association between SDDs and the increase in admission risk for the three outcomes during concurrent SDDs, compared to non-SDDs, that spread from 0 to 5th day: 22.6% (95% confidence interval [CI], 10.4, 36.0) for all respiratory diseases and 29.9% (95%CI: 6.6, 58.4) for COPD in Santa Cruz de Tenerife, and 33.4% (95%CI: -2.1,82.0) for asthma in Las Palmas de Gran Canaria. We obtained a robust association when Saharan dust transported at low altitude, when SDDs belonged to long episodes (≥5days), from the fifth SDD onwards and those SDDs with medium (50

Do Saharan Dust Days Carry a Risk of Hospitalization From Respiratory Diseases for Citizens of the Canary Islands (Spain)?

BACKGROUND: Saharan dust meets the Canary Islands at the beginning of its westward path across the North Atlantic, exceeding the European daily levels for PM10; for this reason, their two provincial capital cities, constitute optimal sites where to evaluate the health effects of this natural event. OBJECTIVES: To assess the short-term association between Saharan Dust Days (SDDs) and respiratory morbidity in the two capital cities. METHODS: We carried out a time-series analysis with daily emergency hospital admissions due to all respiratory system diseases, chronic obstructive pulmonary disease (COPD) and asthma between 2001 and 2005, assessing the independent effect of SDDs, defined according to the application of the methodology accepted by the European Environmental Office. We also examined accumulated effect, and some other specific SDDs' features. RESULTS: We found a short-term association between SDDs and the increase in admission risk for the three outcomes during concurrent SDDs, compared to non-SDDs, that spread from 0 to 5th day: 22.6% (95% confidence interval [CI], 10.4, 36.0) for all respiratory diseases and 29.9% (95%CI: 6.6, 58.4) for COPD in Santa Cruz de Tenerife, and 33.4% (95%CI: -2.1,82.0) for asthma in Las Palmas de Gran Canaria. We obtained a robust association when Saharan dust transported at low altitude, when SDDs belonged to long episodes (≥5days), from the fifth SDD onwards and those SDDs with medium (50

[Health impact evaluation of particle air pollution in five Spanish cities. European APHEIS project]. / Evaluación en cinco ciudades españolas del impacto en salud de la contaminación atmosférica por partículas. Proyecto europeo APHEIS.

BACKGROUND: The health effects of air pollution have been analyzed in numerous studies over recent years, thus having made it possible to quantify the relationship between the two. This study is aimed at analyzing the theoretical benefits which would be achieved by meeting the air quality objectives set forth under EC Directive 1999/30/EC with regard to suspended particles. METHODS: The exposure measurement was taken for Black Smoke (Barcelona, Bilbao, Valencia) and suspended particles under 10 microm (PM10) (Bilbao, Madrid y Sevilla). The health indicators calculated were the mortality due to all causes and respiratory and cardiovascular causes, and emergency hospital admissions and mortality due to respiratory and cardiovascular causes. In the case of PM10 the impact has been calculated because its effects to short-term, within a period of up to 40 days following exposure, and to long-term. For Black Smoke the effects only has been calculated to short-term. RESULTS: The daily levels of PM10 from exceeding 50 microg/m3 in Bilbao, Madrid and Sevilla cause the earlier death of 1.4/100,000 individuals per year because its effects. The effect within a period of up to 40 days following exposure is of 2.8 deaths/100,000. The total number of deaths per year which may be later due to long-term exposure if the yearly average is lowered to 20 microg/m3 is 68/100,000. CONCLUSIONS: The health impact of the current air pollution levels is quantifiable and is not insignificant. APHEIS and the impact evaluations may be of aid in healthcare planning and environmental policies.

Evaluación en cinco ciudades españolas del impacto en salud de la contaminación atmosférica por partículas. Proyecto europeo APHEIS / Health impact evaluation of particle air pollution in five spanish cities. European APHEIS project

Fundamento: Los efectos de la contaminación atmosféricasobre la salud han sido objeto en los últimos años de numerosos estudiosque han permitido cuantificar la asociación entre ambas El objetivode este trabajo es llevar a cabo la Evaluación del Impacto enSalud (EIS) calculando los beneficios que se obtendrían al cumplirlos objetivos establecidos por la Directiva 1999/30/CE en relacióncon las partículas en suspensión.Métodos: Se ha valorado el impacto en salud de la contaminación atmosférica por partículas en suspensión, para lo que se han utilizadodos indicadores distintos: Humos Negros (HN) (Barcelona,Bilbao, Valencia) y partículas en suspensión menores de 10 mm(PM10) (Bilbao, Madrid y Sevilla). Los indicadores de salud fueronla mortalidad por todas las causas, por causa respiratoria y por causacardiovascular, e ingresos hospitalarios urgentes por causa respiratoriay cardiovascular. El EIS se ha realizado mediante el cálculo de lafracción atribuible a la contaminación por partículas. En el caso dePM10 se ha calculado el impacto debido a efectos de la contaminación a corto plazo, los acumulados hasta 40 días después, y a largoplazo. Para HN únicamente se han calculado efectos a corto plazo.Resultados: Los niveles diarios de PM10 por encima de 50µg/m3 en Bilbao, Madrid y Sevilla son responsables de 1,4 muertesprematuras por 100.000 habitantes y año debido a sus efectos a cortoplazo y de 2,8 muertes/100.000 en un periodo de hasta 40 días trasla exposición. A largo plazo, el número de muertes prematuras atribuiblesa la contaminación media anual de PM10 por encima de 20µg/m3 es 68/100.000.Conclusiones: El impacto en salud de los niveles actuales decontaminación atmosférica es cuantificable y no despreciable.APHEIS y las evaluaciones de impacto pueden ayudar a la planificación sanitaria y a las políticas medioambientales

Background: The health effects of air pollution have beenanalyzed in numerous studies over recent years, thus having madeit possible to quantify the relationship between the two. This studyis aimed at analyzing the theoretical benefits which would be achievedby meeting the air quality objectives set forth under EC Directive1999/30/EC with regard to suspended particles.Methods: The exposure measurement was taken for Black Smoke(Barcelona, Bilbao, Valencia) and suspended particles under 10mm (PM10) (Bilbao, Madrid y Sevilla). The health indicators calculatedwere the mortality due to all causes and respiratory and cardiovascularcauses, and emergency hospital admissions and mortalitydue to respiratory and cardiovascular causes. In the case of PM10 theimpact has been calculated because its effects to short-term, within aperiod of up to 40 days following exposure, and to long-term. ForBlack Smoke the effects only has been calculated to short-term.Results: The daily levels of PM10 from exceeding 50 µg/m3 inBilbao, Madrid and Sevilla cause the earlier death of 1.4/100,000individuals per year because its effects. The effect within a period ofup to 40 days following exposure is of 2.8 deaths/100,000. The totalnumber of deaths per year which may be later due to long-term exposureif the yearly average is lowered to 20 µg/m3 is 68/100,000.Conclusions: The health impact of the current air pollutionlevels is quantifiable and is not insignificant. APHEIS and theimpact evaluations may be of aid in healthcare planning and environmentalpolicies