By measuring the anatomical landmark from the earlobe to the nose of the patient.
The oropharyngeal airway is an intraoral J-shaped medical device, which is inserted in the mouth of a patient who is unconscious like in paralysis condition etc. It is important to select the appropriate size of the oropharyngeal airway tube before inserting it into the patient's mouth to avoid any complications. The airway device prevents the closure of the epiglottis and opens the mouth for breathing. It is mainly used when the patient is at respiratory obstruction by the formation of excessive mucous or blockage of the airway by the tongue.
Learn more about Respiratory obstruction here,
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