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Schematic flow-volume loop configuration in a spectrum of airway lesions
Schematic flow-volume loop configuration in a spectrum of airway lesions
(A) Normal.
(B) Variable extrathoracic upper airway obstruction.
(C) Variable intrathoracic upper airway lesions.
(D) Fixed upper airway obstruction.
(E) Lower airways obstruction.
Graphic 63544 Version 3.0
