Level of tracheostomy is by which of the following anatomical landmark? (Repeat)
Ans: B (Isthmus of the thyroid) Ref: Diseases of the Ear Nose and Throat by PL Dhingra 5th edn .2010.Page 337Explanation:Types of tracheostomy based on positionHigh tracheostomy - Above the thyroid isthmus through the first tracheal ringIncreased risk of sub glottic edema and stenosisMid tracheostomy - At the level of thyroid isthmus, through the 2nd or 3rd tracheal ringIsthmus is divided or retractedMost commonly doneLow tracheostomy - Below the isthmusIncreased risk of injury to great vessels in the neck
Cricoid cartilage
Isthumus of thyroid
2nd tracheal ring
3rd tracheal ring
Operative Surgery