[Chronic non-specific respiratory disease with reference to 926 cases].

Area of Science:

• Respiratory Medicine
• Epidemiology
• Environmental Health

Context:

• Investigated 926 patients with chronic non-specific respiratory diseases including asthma, chronic bronchitis, and emphysema.
• Examined the influence of age, allergy, family history, smoking, social class, and occupation on disease genesis.
• Assessed aggravating factors and morbidity associated with these conditions.

Purpose:

• To determine the etiological factors contributing to asthma, chronic bronchitis, and emphysema.
• To identify occupational and environmental influences on respiratory disease development.
• To understand factors that aggravate symptoms and the overall health impact (morbidity) of these diseases.

Summary:

• Asthma is associated with younger age, allergy, and family history.
• Chronic bronchitis shows a distribution of etiological factors including allergy, family history, and smoking.
• Emphysema primarily affects older individuals, with smoking being a key factor, though alpha1-antitrypsin deficiency was noted in younger cases.
• Occupational microclimate and household factors (e.g., housewives) warrant further investigation, especially when traditional risk factors are absent.
• Aggravating factors like humidity, irritants, temperature, dust, and work environment significantly impact symptomatology across all studied diseases.

Impact:

• Highlights the diverse etiological profiles of common respiratory diseases.
• Underscores the significant role of lifestyle (smoking) and environmental factors (occupation, microclimate) in respiratory health.
• Emphasizes the substantial morbidity associated with these conditions, leading to lost workdays and early retirement.