Question
Grading of Laryngeal View as shown in the image is :
| A. |
I |
| B. |
II |
| C. |
III |
| D. |
IV |
Show Answer
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Correct Answer � C Explanation |
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Ans:C.III
Grading of Laryngeal View
- The Cormack-Lehane system classifies views obtained by direct laryngoscopy based on the structures seen.
- It was initially described in 1984 as a way of simulating potential scenarios that trainee anesthetists might face.
- Grade Description
- 1 Full view of glottis
- 2 Partial view of glottis
- 3 Only epiglottis seen, none of the glottis seen
- 4 Neither glottis nor epiglottis is seen
The new classification subdivides grade 2 and 3.
- Grade 2a: Posterior Cords Visible
- Grade 2b: Only Arytenoids visible
- Grade 3a: Epiglottis visible and liftable
- Grade 3b: Epiglottis adherent to the pharynx.
- The view is easy(Grade 1 and 2a): suitable for intubation under direct vision.
- The view is restricted (Grade 2b and 3a): likely to benefit from indirect methods (e.g. gum elastic bougie).
- A difficult view (Grade 3a and 4): likely to need specialist methods for intubation which may need to be performed blindly.