Related Experiment Video
Updated: Aug 25, 2026

Quantification of Orofacial Phenotypes in Xenopus
Published on: November 6, 2014
Craniofacial abnormalities in sleep apnoea syndrome
S Dostálová1, Z Smahel, K Sonka
1Henner's Neurological Clinic, First Medical Faculty, Charles University, Prague, Czech Republic.
Abstract:
One hundred and four men with the suspected diagnosis of sleep apnoea syndrome (SAS) not suffering from neuromuscular diseases or acromegaly were examined by X-ray cephalometry. Subjects suffering from bronchial obstruction, laryngeal carcinoma, suspected Treacher Collins syndrome as well as subjects in whom SAS was not verified were excluded. The remaining 81 men were divided into two groups depending upon disease severity as expressed by the mean index of oxygen desaturations per hour (less than 30-group A; more than 30-group B). In group B, the following parameters were significantly altered as compared with group A: dorsocaudal rotation of the mandible, elongation of the soft palate, and an increase of the saddle angle, increase of the angle of the cranial base, the lower gonion angle and the angle of the inclination of the mandible. Differences in the size of the soft palate, the rotation of the mandible and the size of the lower gonion angle can be found not only between healthy and subjects with SAS but also between subjects with mild and severe apnoea.
More Related Videos
07:54Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
08:03Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
Related Concept Videos
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Overview of the Skull
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
Physical Assessment of the Respiratory Tract II: Inspection
Chest Configuration
The chest configuration can...
Respiratory System Abnormal Finding I: Inspection and Percussion
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
REM Sleep Behavior Disorder
RBD is significantly associated with...
Cardiopulmonary Resuscitation II: ACLS Airway Management