The Mallampati score is generally used to determine how easy it will be to intubate a patient for anesthesia, but it can also be used as a predictor of obstructive sleep apnea.
The Mallampati score has 4 classes:
Class I: Complete visualization of the soft palette.
Class II: Complete visualization of the uvula.
Class III: Visualization of only the base of the uvula.
Class IV: Soft palette is not visible at all.