A Single-center, Prospective Study for Mechanism and Risk Factors of Tracheal Tube-related Tongue Injury

A flexible film sensor with a thickness of 0.11mm is placed between the tongue and the tracheal tube to measure the distribution, join force and dynamic changes of pressure at different site of the tongue. Five channels of pressure values will be recorded separately: (Ch1) the tip of the tongue, (Ch2) the middle of the tongue, (Ch3) the base of the tongue, (Ch4) the right side at the base of the tongue, (Ch5) the left side at the base of the tongue. The pressure values at the following points during the operation will be recorded: (t1) after intubation, (t2) highest pressure during patient positioning, (t3) after position fixed, (t4) at the end of surgery, (t5) before extubation.