Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Maximal and exercise tidal flow-volume loops. Shaded area denotes flow rates at which the onset of dynamic compression of the airways occur. In the left tidal loop, A, expiratory flow impinges on dynamic compression of the airways, and in the right loop, B, expiratory flow impinges on maximal expiratory flow (i.e., defined as expiratory flow limitation, EFL) demonstrating the conventional view of ventilatory limitation.
