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.

The flow–volume loop has been used in the outpatient pulmonary function tests as an objective measure of airway resistance. It differentiates whether the resistance is dynamic or fixed and whether its ...

The flow–volume loop (FVL) analysis is typically helpful in establishing the diagnosis of airway obstruction caused by endobronchial lesions. In this report, we describe a patient with emphysema and ...