Dimensional Variations of Left-Sided Double-Lumen Endobronchial Tubes

Figure 1

Schematic of localization of measured parameters. A = beginning of the DLT shaft. B = midpoint between the beginning of the shaft of the tube (A) and the proximal edge of the tracheal cuff (C). C = proximal edge of the tracheal cuff. D = distal edge of the tracheal cuff. E = proximal edge of the bronchial cuff. F = distal edge of the bronchial cuff. H = virtual extrapolated longitudinal line through the middle of the tracheal tube shaft. I = virtual extrapolated longitudinal line through bronchial tube shaft.