Fig. 3
From: Can drug-induced sleep endoscopy improve the success rates of tongue base surgery?
Comparison of the degree of occlusion between surgical success and surgical failure at each anatomic level: a velum, b oropharynx lateral wall, c tongue base, and d epiglottis. Oropharyngeal lateral wall occlusion assessed by MM in the MM group showed significant differences between surgical success and surgical failure (p = 0.031), whereas that assessed by DISE in the DISE group did not. Abbreviations: MM, Muller’s maneuver; DISE, drug-induced sleep endoscopy.