Association between tree pollen counts and asthma ED visits in a high-density urban center

Sunit P. Jariwala, Satya Kurada, Heather Moday, Andy Thanjan, Laurel Bastone, Moisey Khananashvili, Jason Fodeman, Golda Hudes, David L. Rosenstreich

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Background. Asthma exacerbation patterns are cyclic in nature and often correlate with air particle concentrations. Objective. To examine the relationship between asthma-related emergency department (ED) visits and outdoor air quality for pediatric and adult patients in a high asthma prevalence area, the New York City borough of the Bronx. Methods. Numbers of daily asthma-related adult and pediatric ED visits during one complete year (1999) were obtained from the seven major Bronx hospitals. Daily values of nitrogen oxides (NO x), ozone (O3), sulfur dioxide (SO2), and pollen counts were acquired. Results. Asthma-related ED visit numbers were highest in December-January and lowest in July. There were three distinct peaks of increased asthma ED visits: winter (December-January), spring (late April-May), and fall (October). The spring peak was the most striking and coincided with high tree pollen counts (tree pollen: r = 0.90, p = .03). We observed a positive correlation between asthma ED visits in the winter and SO2 and NOx levels. Winter peaks of SO2 and NOx in early December appeared to precede the winter asthma peak. Conclusions. The spring asthma peak is closely associated with increased tree pollen counts, and the asthma increase at this time is likely due to allergic reactions to pollen. No significant associations could be established with the fall peak. The winter peak correlates with elevated SO2 and NOx levels.

Original languageEnglish (US)
Pages (from-to)442-448
Number of pages7
JournalJournal of Asthma
Volume48
Issue number5
DOIs
StatePublished - Jun 2011

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Pollen
Hospital Emergency Service
Asthma
Air
Pediatrics
Nitrogen Oxides
Sulfur Dioxide
Ozone
Hypersensitivity

Keywords

  • asthma
  • emergency department
  • pollen
  • pollutants

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Immunology and Allergy
  • Pediatrics, Perinatology, and Child Health

Cite this

Association between tree pollen counts and asthma ED visits in a high-density urban center. / Jariwala, Sunit P.; Kurada, Satya; Moday, Heather; Thanjan, Andy; Bastone, Laurel; Khananashvili, Moisey; Fodeman, Jason; Hudes, Golda; Rosenstreich, David L.

In: Journal of Asthma, Vol. 48, No. 5, 06.2011, p. 442-448.

Research output: Contribution to journalArticle

Jariwala, Sunit P. ; Kurada, Satya ; Moday, Heather ; Thanjan, Andy ; Bastone, Laurel ; Khananashvili, Moisey ; Fodeman, Jason ; Hudes, Golda ; Rosenstreich, David L. / Association between tree pollen counts and asthma ED visits in a high-density urban center. In: Journal of Asthma. 2011 ; Vol. 48, No. 5. pp. 442-448.
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