Flow volume curves measure flow, in litres per minute, with respect to time. The expiration is forced.
In some cases an inspiratory part is added; during this phase the time runs backwards and the line is plotted below the time axis. In this way a complete respiratory loop can be plotted.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page