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A member asked:

What does it mean if a pft shows that a flow volume loop is consistent with an extrathoracic obstructive pattern? vocal cords and thyroid are good.

A doctor has provided 1 answer
Dr. Stevan Cordas answered

Specializes in Internal Medicine

Extrathoracic obstru: It may be cricopharngeal spasm or pseudoasthm. It may be lesions of the larynx or under the vocal cords. Croup in kids is an example.

Answered 10/19/2012

5.5k views

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