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How about emphysema? airway volume changed but it's obstructive.
i think OP meant to say that something DECREASING airway volume = restrictive
I think they mean if something is impacting LUNG volume (ie. expansion/compliance) = restrictive
Airway disorder --> obs. / Parenchymal disorder --> res.
With emphysema the airway collapses (obs.) before they are able to exhale fully thus the air is trapped
Just to be clear, this is not a classical obstructive lung disease affecting the small airways, as it is above the carina (trachea). This is better classified as a fixed upper airway obstruction. See the flow loop here for "fixed obstruction" - it came up in IMED UWorld so maybe familiarize yourself with the image since it is unique! https://www.grepmed.com/images/2948