1. Effects of Levodopa on Pulmonary Function in Parkinson's Disease
Herer Bertrand , MD, Arnulf Isabelle , MD, Housset Bruno , MD 
CHEST 
Volume 119, Issue 2, Pages (February 2001)
DOI: /chest
Copyright © 2001 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Flow-volume loop of a patient with PD and UAO, atbaseline and after oral intake of levodopa. Volume (V) along the X axis(each mark is 1 L) and expiratory ( E) andinspiratory ( I) flows along the Y axis (each mark is2 L). Flow-volume loop at baseline show flow oscillations and reducedinspiratory and expiratory flow rates. Levodopa induced an improvementof the saw-tooth pattern and an important increase of inspiratory andexpiratory flow rates.
CHEST  , DOI: ( /chest )
Copyright © 2001 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Flow-volume loop of a patient with PD and UAO, atbaseline and after oral intake of levodopa (same legend as Figure 1). Flow-volume loop at baseline show flow oscillations. Levodopa inducesan improvement of the saw-tooth pattern and a slight increase ofinspiratory flow rate. See Figure 1 for abbreviations.
CHEST  , DOI: ( /chest )
Copyright © 2001 The American College of Chest Physicians Terms and Conditions