Day: February 20, 2026

The Subclinical Gap: Why Mechanical Lung Function Is a Lagging Indicator in COPD

For more than half a century, spirometry has defined how we diagnose Chronic Obstructive Pulmonary Disease (COPD). A reduced FEV_1/FVC ratio confirms airflow limitation, and clinical management follows accordingly. International guidelines continue to rely on spirometry as the diagnostic cornerstone of the disease [2].