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Updated: Feb 4, 2026

Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Prediction of tongue obstruction observed from drug induced sleep computed tomography by cephalometric parameters
Rashu Mittal1, Li-Ang Lee2, Cheng Hui Lin3
1Craniofacial Center, Taoyuan, Chang Gung Memorial Hospital, Chang Gung University, Taiwan.
Objective:
To elucidate potential role of cephalometric measurements to predict tongue base obstruction as observed on drug Induced Sleep Computed Tomography (DIS-CT).
Methods:
Study included 35 patients with moderate to severe sleep apnea who underwent DIS-CT & cephalometric examination to assess tongue base obstruction.
Results:
Statistically significant difference was noted for SNA angle & Mandibular posterior airway space (PAS) among groups with total tongue obstruction versus Non-total tongue obstruction identified on DIS-CT.
Conclusion:
Lateral cephalogram can be used as a standard screening tool with commonly used skeletal and soft tissue parameters to predict the possibility of tongue collapse/obstruction during sleep in patient with moderate to severe OSAS.
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