Fig. 2From: A prospective randomized study of different height of operation table for tracheal intubation with videolaryngoscopy in ramped positionIllustration of the relation of table height and intubator. A Mask ventilation at umbilical table level (U). B Tracheal intubation at umbilical table level (U). C Mask ventilation at nipple table level (N). D Tracheal intubation at nipple table level (N)Back to article page