1. Effect of i.v. phenylephrine or ephedrine on the ED50 of intrathecal bupivacaine with fentanyl for Caesarean section 
M.C. Hennebry, G.M. Stocks, P. Belavadi, J. Barnes, S. Wray, M.O. Columb, G. Lyons 
British Journal of Anaesthesia 
Volume 102, Issue 6, Pages (June 2009)
DOI: /bja/aep095
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Consort diagram.
British Journal of Anaesthesia  , DOI: ( /bja/aep095)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Up–down sequences for phenylephrine and ephedrine with ED50 (95% CI) estimates at 7.8 (6.7–8.9) and 7.6 (6.8–8.4) mg, respectively.
British Journal of Anaesthesia  , DOI: ( /bja/aep095)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

4. Fig 3 Heart rate and blood pressure data expressed as mean (sd).
British Journal of Anaesthesia  , DOI: ( /bja/aep095)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions