Near-fatal asthma.

The prevalence of patients with acute severe asthma appears to be increasing in many countries. In the present review, we summarize data in the literature relating to the prevention and treatment of fatality-prone asthmatics. The underlying assumption is that increased understanding of near-fatal asthma will increase our understanding of the pathophysiology of severe asthma, and lead to interventions that could reduce the mortality rate from asthma. Recognition of acute life-threatening asthma attacks by any physician is mandatory, since lack of such diagnosis and appropriate treatment has been shown to have devastating consequences. The characteristics that allow identification of asthmatics prone to die in ambulatory settings (i.e. previous admissions, type of therapy, etc.) as well as the principal precipitating factors of acute near-fatal and fatal attacks of asthma are reviewed. Predisposing factors, such as lack of appropriate treatment, lack of compliance or poor preventive measures are debated. Finally, we discuss current therapeutic approaches in emergency facilities, based on the major pathophysiological findings in near-fatal asthma.