Persistent hyperreactivity and reactive airway dysfunction in firefighters at the World Trade Center

Gisela I. Banauch, Dawn Alleyne, Raoul Sanchez, Kattia Olender, Hillel W. Cohen, Michael Weiden, Kerry J. Kelly, David J. Prezant

Research output: Contribution to journalArticle

164 Scopus citations

Abstract

New York City Fire Department rescue workers experienced massive exposure to airborne particulates at the World Trade Center site. Aims of this longitudinal study were to (1) determine if bronchial hyperreactivity was present, persistent, and independently associated with exposure intensity, (2) identify objective measures shortly after the collapse that would predict persistent hyperreactivity and a diagnosis of reactive airways dysfunction 6 months post-collapse. A representative sample of 179 rescue workers stratified by exposure intensity (high, moderate, and control) without current smoking or prior respiratory disease was enrolled. Highly exposed workers arrived within 2 hours of collapse, moderately exposed workers arrived later on Days 1-2; control subjects were not exposed. Hyperreactivity at 1, 3, and 6 months post-collapse was associated with exposure intensity, independent of ex-smoking and airflow obstruction. Six months post-collapse, highly exposed workers were 6.8 times more likely than moderately exposed workers and control subjects to be hyperreactive (95% confidence interval, 1.8-25.2; p = 0.004), and hyperreactivity persisted in 55% of those hyperreactive at 1 and/or 3 months. In highly exposed subjects, hyperreactivity 1 or 3 months post-collapse was the sole predictor for reactive airways dysfunction (p = 0.021). In conclusion, development and persistence of hyperreactivity and reactive airways dysfunction were strongly and independently associated with exposure intensity. Hyperreactivity shortly post-collapse predicted reactive airways dysfunction at 6 months in highly exposed workers; this has important implications for disaster management.

Original languageEnglish (US)
Pages (from-to)54-62
Number of pages9
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume168
Issue number1
DOIs
StatePublished - Jul 1 2003

Keywords

  • Firefighters
  • Inorganic particulate matter
  • Nonspecific bronchial hyper-reactivity
  • Reactive airways dysfunction syndrome
  • World Trade Center collapse

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

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