Fig. 3From: Unexpected abnormal positive pressure due to misconnection of excess gas tubeMisconnection of the excess gas tube to a mount equipment on the anesthesia machine in another case. The excess gas tube (blue arrow) is misconnected to the safety valve of Jackson Ree’s system on the mount equipment (red arrow, Nihon Kohden Co.) attached to the left side of the anesthesia machine (Apollo, Draeger, Germany)Back to article page