Fig. 6From: Upper airway lengthening caused by weight increase in obstructive sleep apnea patientsThe correlations between apnea-hypopnea index (AHI) and a upper airway length LUA, b distance from hard palate plane to the top of second cervical spine h, c angle β, and d length of the long axial of the tongue LLAX in obstructive sleep apnea patientsBack to article page