Skip to main content

Table 1 The tracheal diameter measured by precision electronic Vernier caliper and ultrasound, Mean ± SD (mm)

From: Assessing the accuracy of ultrasound measurements of tracheal diameter: an in vitro experimental study

Tracheal diameter

Precision electronic Vernier caliper

Ultrasound

OTD

26.64 ± 2.12

26.83 ± 2.00

ITD

21.59 ± 1.71

21.26 ± 2.04

ATWT

3.64 ± 0.57

3.42 ± 0.57

  1. OTD Outer transverse diameter, ITD Internal transverse diameter, ATWT Anterior tracheal wall thicknesses