Schematic drawing of left main bronchus intubation with a dual-lumen endotracheal tube (Broncho-Cath, Mallinckrodt). Source: Chapter 112. Diving Medicine and Near Drowning, Principles of Critical Care, 3e Citation: Hall JB, Schmidt GA, Wood LH. Principles of Critical Care, 3e; 2005 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/hall/hall_c112f003.jpg&sec=39879521&BookID=361&ChapterSecID=39866487&imagename= Accessed: October 19, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved