1. Effect of obesity and thoracic epidural analgesia on perioperative spirometry 
von Ungern-Sternberg B.S. , Regli A. , Reber A. , Schneider M.C.  
British Journal of Anaesthesia 
Volume 94, Issue 1, Pages (January 2005)
DOI: /bja/aeh295
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Differences (%) of vital capacity of the group with epidural analgesia (EDA group, white bars) and the group with opioid analgesia (opioid group, black bars) at the different times of spirometric assessment divided into three groups according to body mass index (BMI<25, BMI 25–30 and BMI>30). *P<0.05; n.s., not significant.
British Journal of Anaesthesia  , DOI: ( /bja/aeh295)
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions