Why is it necessary? of Tracheostomy

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Various conditions and circumstances can lead to an obstructed airway and require a tracheostomy. These include:

An abnormality present at birth that involves a narrowed larynx or trachea
An injury to the neck that compresses or obstructs the airway
A cut throat
Swelling of the lining of the larynx or trachea from inhaling smoke or steam
Acute inflammation of the epiglottis (Epiglottitis)
Inflammation of the larynx and air tubes (laryngotracheobronchitis)
Diphtheria
Blockage of the larynx by a foreign body
Advanced Cancer of the tongue, throat, larynx or upper trachea
Cancer of the thyroid gland
Paralysis of the vocal cords, allowing food or other material to get into the larynx
Any other condition or state (such as coma, Stroke, Brain tumour, poisoning, head injury, Tetanus or Multiple sclerosis) that can allow material other than air to enter the lungs.