Asthma exacerbation in children: relationship among pollens, weather, and air pollution

Asthma exacerbation is an episode of (sub)acute worsening of asthmatic symptoms. Exacerbation may depend on environmental factors. The present study investigated emergency calls for asthma exacerbation in children, analysing: i) their trend over the course of time; and ii) their possible relationshi...

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Vydáno v:Allergologia et immunopathologia Ročník 42; číslo 4; s. 362
Hlavní autoři: Tosca, M A, Ruffoni, S, Canonica, G W, Ciprandi, G
Médium: Journal Article
Jazyk:angličtina
Vydáno: Spain 01.07.2014
Témata:
Air Pollution - adverse effects
Air Pollution - analysis
Asthma - epidemiology
Asthma - etiology
Child
Female
Humans
Italy - epidemiology
Male
Pollen - adverse effects
Pollen - immunology
Seasons
Weather
Italy
Emergency calls
Meteorological parameters
Air pollution
Exacerbations
Children
Pollens
Asthma
ISSN:1578-1267, 1578-1267
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Abstract Asthma exacerbation is an episode of (sub)acute worsening of asthmatic symptoms. Exacerbation may depend on environmental factors. The present study investigated emergency calls for asthma exacerbation in children, analysing: i) their trend over the course of time; and ii) their possible relationship with environmental factors, including pollen count, meteorological parameters, and air pollution. Emergency calls for exacerbation were recorded for 10 years (from 2002 to 2011) in Genoa (Italy). Betulaceae, Urticaceae, Gramineae, and Oleaceae pollen counts were measured. Meteorological parameters and air pollutants were also measured in the same area and for the same period. The number of emergency calls did not significantly modify during the time studied. Two main peaks were detected: during the autumn and the spring. Wind speed significantly diminished as did most air pollutants. There were significant and relevant relationships between emergency calls and: pollens during the spring (r = 0.498), rainfall (r = 0.818), wind speed (r = 0.727), and air pollutants (r = 0.622 for SO2; r = 0.699 for NO; r = 0.58 for NO2). This 10-year survey demonstrates that: (i) asthma exacerbations did not diminish over the time; (ii) there were seasonal peaks (autumn and spring); (iii) pollens (mainly Parietaria), wind speed and rainfall, SO2, NO, O3 and NO2 were strongly associated with asthma exacerbations in children in this area. Therefore, asthma exacerbations may significantly depend on environmental variations.
AbstractList Asthma exacerbation is an episode of (sub)acute worsening of asthmatic symptoms. Exacerbation may depend on environmental factors.BACKGROUNDAsthma exacerbation is an episode of (sub)acute worsening of asthmatic symptoms. Exacerbation may depend on environmental factors.The present study investigated emergency calls for asthma exacerbation in children, analysing: i) their trend over the course of time; and ii) their possible relationship with environmental factors, including pollen count, meteorological parameters, and air pollution.OBJECTIVEThe present study investigated emergency calls for asthma exacerbation in children, analysing: i) their trend over the course of time; and ii) their possible relationship with environmental factors, including pollen count, meteorological parameters, and air pollution.Emergency calls for exacerbation were recorded for 10 years (from 2002 to 2011) in Genoa (Italy). Betulaceae, Urticaceae, Gramineae, and Oleaceae pollen counts were measured. Meteorological parameters and air pollutants were also measured in the same area and for the same period.METHODSEmergency calls for exacerbation were recorded for 10 years (from 2002 to 2011) in Genoa (Italy). Betulaceae, Urticaceae, Gramineae, and Oleaceae pollen counts were measured. Meteorological parameters and air pollutants were also measured in the same area and for the same period.The number of emergency calls did not significantly modify during the time studied. Two main peaks were detected: during the autumn and the spring. Wind speed significantly diminished as did most air pollutants. There were significant and relevant relationships between emergency calls and: pollens during the spring (r = 0.498), rainfall (r = 0.818), wind speed (r = 0.727), and air pollutants (r = 0.622 for SO2; r = 0.699 for NO; r = 0.58 for NO2).RESULTSThe number of emergency calls did not significantly modify during the time studied. Two main peaks were detected: during the autumn and the spring. Wind speed significantly diminished as did most air pollutants. There were significant and relevant relationships between emergency calls and: pollens during the spring (r = 0.498), rainfall (r = 0.818), wind speed (r = 0.727), and air pollutants (r = 0.622 for SO2; r = 0.699 for NO; r = 0.58 for NO2).This 10-year survey demonstrates that: (i) asthma exacerbations did not diminish over the time; (ii) there were seasonal peaks (autumn and spring); (iii) pollens (mainly Parietaria), wind speed and rainfall, SO2, NO, O3 and NO2 were strongly associated with asthma exacerbations in children in this area. Therefore, asthma exacerbations may significantly depend on environmental variations.CONCLUSIONSThis 10-year survey demonstrates that: (i) asthma exacerbations did not diminish over the time; (ii) there were seasonal peaks (autumn and spring); (iii) pollens (mainly Parietaria), wind speed and rainfall, SO2, NO, O3 and NO2 were strongly associated with asthma exacerbations in children in this area. Therefore, asthma exacerbations may significantly depend on environmental variations.
Asthma exacerbation is an episode of (sub)acute worsening of asthmatic symptoms. Exacerbation may depend on environmental factors. The present study investigated emergency calls for asthma exacerbation in children, analysing: i) their trend over the course of time; and ii) their possible relationship with environmental factors, including pollen count, meteorological parameters, and air pollution. Emergency calls for exacerbation were recorded for 10 years (from 2002 to 2011) in Genoa (Italy). Betulaceae, Urticaceae, Gramineae, and Oleaceae pollen counts were measured. Meteorological parameters and air pollutants were also measured in the same area and for the same period. The number of emergency calls did not significantly modify during the time studied. Two main peaks were detected: during the autumn and the spring. Wind speed significantly diminished as did most air pollutants. There were significant and relevant relationships between emergency calls and: pollens during the spring (r = 0.498), rainfall (r = 0.818), wind speed (r = 0.727), and air pollutants (r = 0.622 for SO2; r = 0.699 for NO; r = 0.58 for NO2). This 10-year survey demonstrates that: (i) asthma exacerbations did not diminish over the time; (ii) there were seasonal peaks (autumn and spring); (iii) pollens (mainly Parietaria), wind speed and rainfall, SO2, NO, O3 and NO2 were strongly associated with asthma exacerbations in children in this area. Therefore, asthma exacerbations may significantly depend on environmental variations.
Author Ruffoni, S
Ciprandi, G
Tosca, M A
Canonica, G W
Author_xml – sequence: 1
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  surname: Tosca
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  givenname: G W
  surname: Canonica
  fullname: Canonica, G W
  organization: Allergy and Respiratory Diseases Clinic, University of Genoa and IRCCS - Azienda Ospedaliera Universitaria San Martino, Genoa, Italy
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  organization: Allergy and Respiratory Diseases Clinic, University of Genoa and IRCCS - Azienda Ospedaliera Universitaria San Martino, Genoa, Italy. Electronic address: gio.cip@libero.it
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Meteorological parameters
Air pollution
Exacerbations
Children
Pollens
Asthma
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SubjectTerms Air Pollution - adverse effects
Air Pollution - analysis
Asthma - epidemiology
Asthma - etiology
Child
Female
Humans
Italy - epidemiology
Male
Pollen - adverse effects
Pollen - immunology
Seasons
Weather
Title Asthma exacerbation in children: relationship among pollens, weather, and air pollution
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