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Laryngeal mask airway
Laryngeal mask was developed in 1980's, and recently is being used extensively in emergency medicine. It affords excellent ventilation without going through the normal intubation process and visualization of laryngeal inlet. It should be considered as a supraglottic airway management device. It can be introduced even by an emergency technician with training during emergency situations. Visualization of glottis is not essential for introduction of laryngeal mask airway.
Development of laryngeal mask:
Brain designed laryngeal mask after careful study of plaster casts of cadaver airway. He also conceived that by inflating an elliptical cuff at the level of hypopharynx an airtight seal could be achieved. This method required reliable avoidance of down-folding of epiglottis within the mask orifice during insertion.
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