Lung Function Tests: Normal vs Obstructive vs Restrictive Patterns Explained #268278 (License: Personal Use)

The image displays three vertically stacked panels illustrating lung volume compartments (TLC, FRC, RV, IC, VC) and corresponding flow-volume or volume-time curves for normal, obstructive, and restrictive lung diseases. Each panel highlights characteristic changes: in obstruction, FEV1 drops disproportionately to FVC (↓FEV1/FVC ratio), RV and FRC increase; in restriction, all volumes-including TLC and FVC-decrease proportionally while FEV1/FVC remains normal or elevated. Key abbreviations are defined (e.g., RV = residual volume, FVC = forced vital capacity).

Used in medical education, pulmonology resources, and clinical training materials to teach interpretation of spirometry and lung volume measurements. Matches user intent for understanding diagnostic criteria for asthma, COPD, and interstitial lung disease.