Determination of the appropriate oropharyngeal airway size in adults: Assessment using ventilation and an endoscopic view
Size 9 and 8 airways for men and women, respectively, have been proposed as most appropriate based on endoscopy. However, a limitation of this guideline is that ventilation was not assessed.
Source: The American Journal of Emergency Medicine - Category: Emergency Medicine Authors: Hyun Joo Kim, Shin Hyung Kim, Ji Young Min, Wyun Kon Park Source Type: research