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[Bronchial asthma among adults].

T Nakazawa1

  • 1Gunma University, School of Health Sciences.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|October 26, 2001
PubMed
Summary

Asthma mortality rates have generally decreased, though some groups like young males saw temporary increases. Respiratory infections, fatigue, and stress are key triggers for fatal asthma attacks, with many occurring at home.

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Area of Science:

  • Pulmonology
  • Epidemiology
  • Public Health

Context:

  • Asthma mortality trends from 1980-1999 indicate a general decline, with specific age and demographic variations.
  • A significant proportion of fatal asthma cases involve sudden onset and occur in older adults, predominantly at home.

Purpose:

  • To analyze trends in adult asthma mortality over two decades.
  • To identify demographic, clinical, and etiological factors associated with fatal asthma attacks.

Summary:

  • Annual asthma deaths decreased from 5800-6200 (1980-1992) to 5065-5589 (1997-1999), with males slightly more affected.
  • Fatalities predominantly occurred in 70-80 year olds, though young adult male deaths increased then decreased. Sudden death (1-3 hours) and home-onset attacks were common.
  • Intrinsic/mixed severe asthma types comprised over half of cases. Triggers included infections, fatigue, stress. Smokers/ex-smokers were 52%, with pulmonary emphysema a frequent complication.

Impact:

  • Highlights the need for targeted interventions for high-risk asthma patients, particularly older adults and those with specific triggers.
  • Informs public health strategies for asthma management and prevention, emphasizing home-based care and trigger avoidance.

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