Spirometry with FVL measurement is a vital component of the patient evaluation for respiratory symptoms, and when a properly performed FVL test is abnormal it should prompt a thorough investigation.

What Is Obstructive Lung Disease? People with obstructive lung disease have shortness of breath because it's hard for them to exhale all the air from their lungs. Because of damage to the lungs or ...

Obstructive lung diseases like COPD cause trouble when you're exhaling air. Restrictive lung diseases like pulmonary fibrosis make it harder to inhale air, reducing total lung capacity. There are two ...

Pre- and post-exercise flow-volume loops are often recommended as an easy non-invasive method for diagnosing or excluding exercise-induced laryngeal obstructions in patients with exercise-related ...