Photo taken from the MA Statewide Treatment Protocols V. 10.01
Class & Grade
Class 1 = soft palate, uvula, anterior and posterior pillars visible
Class 2 = soft palate, uvula visible
Class 3 = soft palate, base of uvula visible
Class 4 = soft palate not visible
Class 1 = Grade 1 view 99-100%
Class 4 = Grade 4 view 100% obstructed [2, 43]
