1. Current Practice in Pulmonary Function Testing
Scott E. Evans, MD, Paul D. Scanlon, MD 
Mayo Clinic Proceedings 
Volume 78, Issue 6, Pages (June 2003)
DOI: /
Copyright © 2003 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Figure 1
Expiratory and inspiratory flow-volume curves. The forced expiratory vital capacity maneuver is represented by positive flow values; the forced inspiratory vital capacity maneuver is represented by negative flow values. Flow-volume curves correlate to numerical values in the Spirometry section of Table 2.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 2003 Mayo Foundation for Medical Education and Research Terms and Conditions