Morbidity and mortality of asthma

Area of Science:

• Pulmonology
• Epidemiology
• Allergy and Immunology

Background:

• Asthma morbidity and mortality rates have risen since the 1960s, with increased hospitalizations observed since the early 1980s.
• Potential contributing factors include changes in asthma's natural history, increased environmental irritant exposure, and improved diagnostic accuracy differentiating asthma from other respiratory conditions.

Observation:

• The management of asthma has evolved significantly, particularly with the widespread use of corticosteroids.
• Corticosteroids have improved quality of life for many asthma patients but pose risks if underused or if patients, parents, or physicians fail to recognize worsening respiratory distress.
• Other factors contributing to asthma mortality include arrhythmias linked to theophylline and beta-agonist use combined with hypoxia, as well as psychological factors in adolescents.

Findings:

• A significant portion of asthma deaths occur outside hospital settings and may be preventable.
• Failure to perceive impending respiratory difficulty can lead to under-medication and increased mortality.
• Psychological factors in adolescents (15-25 years) are implicated in the rise of asthma deaths within this age group.

Implications:

• There is a need for heightened awareness among patients, families, and healthcare providers regarding asthma severity and management.
• Despite rising hospitalizations, overall asthma mortality is not increasing alarmingly, but corrective actions are necessary.
• Early recognition of respiratory problems and prompt intervention are essential to reduce preventable asthma-related deaths.