How does emphysema develop?

Emphysema is a pathological condition characterized by decreased elasticity of the airways distal to the terminal bronchioles, resulting in increased lung volume and/or destruction of the airway walls. So, how does emphysema develop?

How Does Emphysema Develop?

Emphysema may result from long-term smoking, chronic bronchitis, prolonged exposure to dust, aging, genetic factors, and other causes. Mild emphysema often presents with no obvious clinical symptoms; however, as the disease progresses, patients typically experience dyspnea upon exertion. In advanced stages, clinical manifestations of cor pulmonale—such as lower-limb edema and jugular venous distension—may appear. Mild emphysema generally does not require specific treatment. Patients should quit smoking, avoid respiratory infections, and engage in appropriate physical exercise to maintain pulmonary function. When emphysema worsens and symptoms become prominent, inhaled bronchodilators—such as ipratropium bromide, salbutamol, and tiotropium bromide—may be used to relieve bronchospasm.

If an acute infection occurs, further diagnostic tests should be performed to identify the causative pathogen, followed by targeted antimicrobial therapy. Research on the association between alpha-1 antitrypsin (AAT) deficiency and emphysema indicates that emphysema arises from an imbalance between proteases and antiproteases in the lungs, leading to destruction of the alveolar septa. Numerous animal models of emphysema support this hypothesis, and studies in humans with emphysema have demonstrated elevated concentrations of elastin peptides in affected individuals.

We recommend that patients proactively avoid harmful environmental exposures in daily life to safeguard their health. We hope this information has been helpful.