Thyromental distance (TMD) measurement is a method commonly used to predict the difficulty of intubation and is measured from the thyroid notch to the tip of the jaw with the head extended. If it is less than 7.0 cm with hard scarred tissues, it indicates possible difficult intubation.
See also
References
- Baker, PA; Depuydt, A; Thompson, JM (Aug 2009). "Thyromental distance measurement--fingers don't rule". Anaesthesia. 64 (8): 878–82. doi:10.1111/j.1365-2044.2009.05985.x. PMID 19604192. S2CID 33007204.
- "Fig.1: Thyromental position". e-SAFE, Royal College of Anaesthetists and The Association of Anaesthetists of Great Britain and Ireland. Retrieved 2 February 2014.
- "Fig.2: Thyromental position". e-SAFE, Royal College of Anaesthetists and The Association of Anaesthetists of Great Britain and Ireland. Retrieved 2 February 2014.