Abstract: Objective　To evaluate the three-dimensional anatomical characteristics of airway and mandible, the methods and times of anesthesia intubation in patients with obstructive sleep apnea hypopnea syndrome (OSAHS).   Methods　30 patients with normal airway and 30 patients with OSAHS airway who underwent general anesthesia in our hospital and had been scanned by head and neck spiral CT from March 2016 to March 2019 were collected. Dolphin software was used to reconstruct and analyze the airway of the patients. The three-dimensional reconstruction and measurement of the mandible were performed. At the same time, the methods and times of anesthesia intubation were recorded.    Results   The airway volume, sagittal minimum cross section area, horizontal minimum cross section area and coronal minimum cross section area in OSAHS patients were significantly lower than those in normal patients (P<0.05). The mandibular distance of OSAHS patients was lower than that of normal patients, and the difference was statistically significant (P<0.05), whereas the angle of mandible was not significantly different from that of normal patients (P>0.05). The methods and times of anesthesia intubation in OSAHS patients were significantly different from those in normal patients (P<0.05).   Conclusion　There are significant differences in three-dimensional anatomical characteristics of airway and mandible in patients with OSAHS. The anatomical characteristics of airway and mandible can be used as a reference for airway evaluation and endotracheal intubation before general anesthesia.

Key words: Obstructive sleep apnea hypopnea syndrome, 　Mandible, 　Intubation