“Asthma is a disorder of the airways characterized by paroxysmal or persistent symptoms (dyspnea, chest tightness, wheeze and cough), with variable airflow limitation [and] airway hyperresponsiveness to a variety of stimuli. Airway inflammation (including mast cells and eosinophils) or its consequences is important in the pathogenesis and persistence of asthma. This provides a strong argument for the recommendation that the management of asthma should focus on the reduction of this inflammatory state through environmental control measures and the early use of disease-modifying agents, rather than symptomatic therapy alone.” (Canadian Asthma Consensus Conference, 1996).
Asthma is one of the most prevalent chronic conditions affecting Canadians. It places a heavy burden on the nation’s health care expenditures, reduces productivity, and seriously affects the quality of life for individuals with asthma and their families. This report summarizes the definition, prevalence and impact of asthma, and includes a review of both the scope for prevention and control, and existing activities in Canada. It is based on current literature reviews, reports, health data, and surveys.
A National Asthma Prevention and Control Strategy can provide the overall framework for mobilizing energies from many sectors to the prevention and management of asthma in Canada. This background document will serve as the starting point for the development of the national strategy.
Contents
Preface
National Asthma Control Task Force
Executive Summary
Introduction
Definition
Prevalence of Asthma in the Population
Associated Morbidity and Mortality
Personal, Social and Economic Impact
Causes of Asthma
Scope for Prevention
Screening for Asthma/Early Detection
Scope for Control of Asthma
System Support
Summary
Bibliography
