1. Ultrasonographic evaluation of gastric content during labour under epidural analgesia: a prospective cohort study 
A. Bataille, J. Rousset, E. Marret, F. Bonnet 
British Journal of Anaesthesia 
Volume 112, Issue 4, Pages (April 2014)
DOI: /bja/aet435
Copyright © 2014 The Author(s) Terms and Conditions

2. Fig 1
Ultrasonographic image showing measurement of antral CSA in a labouring pregnant woman. L, liver; U, uterus. 1 and 2 are the largest perpendicular diameters of the antrum.
British Journal of Anaesthesia  , DOI: ( /bja/aet435)
Copyright © 2014 The Author(s) Terms and Conditions

3. Fig 2
Antral CSA assessed by ultrasonography (a) in six pregnant women after overnight fasting and after intake of 250 ml of non-clear liquid and (b) in 60 pregnant women during labour when calling the anaesthetist for epidural analgesia and on full cervical dilatation.
British Journal of Anaesthesia  , DOI: ( /bja/aet435)
Copyright © 2014 The Author(s) Terms and Conditions

4. Fig 3 Flow chart of the study with parturients included during labour.
British Journal of Anaesthesia  , DOI: ( /bja/aet435)
Copyright © 2014 The Author(s) Terms and Conditions

5. Fig 4
Correlation between changes in CSA and time elapsed between measurements (duration of labour). Blue line represents regression line and green lines represent 95% confidence interval.
British Journal of Anaesthesia  , DOI: ( /bja/aet435)
Copyright © 2014 The Author(s) Terms and Conditions