Thyromental distance

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Thyromental distance (TMD) measurement is a method commonly used to predict the difficulty of intubation [1] and is measured from the thyroid notch to the tip of the jaw with the head extended. [2] If it is less than 7.0 cm with hard scarred tissues, it indicates possible difficult intubation. [3]

Tracheal intubation

Tracheal intubation, usually simply referred to as intubation, is the placement of a flexible plastic tube into the trachea (windpipe) to maintain an open airway or to serve as a conduit through which to administer certain drugs. It is frequently performed in critically injured, ill, or anesthetized patients to facilitate ventilation of the lungs, including mechanical ventilation, and to prevent the possibility of asphyxiation or airway obstruction.

Scar area of fibrous tissue that replaces normal skin after an injury

A scar is an area of fibrous tissue that replaces normal skin after an injury. Scars result from the biological process of wound repair in the skin, as well as in other organs and tissues of the body. Thus, scarring is a natural part of the healing process. With the exception of very minor lesions, every wound results in some degree of scarring. An exception to this are animals with complete regeneration, which regrow tissue without scar formation.

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  1. 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.
  2. "Fig.1: Thyromental position". e-SAFE, Royal College of Anaesthetists and The Association of Anaesthetists of Great Britain and Ireland. Retrieved 2 February 2014.
  3. "Fig.2: Thyromental position". e-SAFE, Royal College of Anaesthetists and The Association of Anaesthetists of Great Britain and Ireland. Retrieved 2 February 2014.