OBJECTIVE: To evaluate the mechanism and level of @entity27 ( @entity27 ) @entity1 during natural sleep, together with synchronous electroencephalogram and respiratory events registration at 3-Tesla magnetic resonance imaging (MRI) platform with high spatial and temporal resolution. STUDY DESIGN: A prospective cohort study of 20 randomly selected @entity27 @entity1 . METHODS: Fifteen of 20 @entity1 were able to complete spontaneous sleep during MRI. While asleep, dynamic MR images of pharynx were obtained in the midline sagittal view. During the scan, nasal and oral airflow, thoracoabdominal wall effort, and electroencephalogram were synchronously recorded. The physiologic data were retrospectively scored to identify periods of @entity386 and synchronized with dynamic MR images. RESULTS: In all 15 @entity1 , the site of complete @entity1224 occurred at the retropalatal space. We noticed different positions of the soft palate during apneic events. In seven of 15 @entity1 (47%), the soft palate was attached to the tongue base and moved backward, compressing the airway. In five of 15 @entity1 (33%), the soft palate was detached from the tongue base and solely moved backward, compressing the airway. In three @entity1 (20%), we recorded both mechanisms of complete @entity1224 . In cases with attached soft palate to the tongue base, we noticed significant narrowing of the retrolingual space during apneic events. CONCLUSION: We describe a novel mechanism of obstruction dependent on the position of soft palate. This mechanism might play an important role in selecting candidates for surgery or treatment with @entity6256 . LEVEL OF EVIDENCE: 2b. Laryngoscope, 2014.

Sleep magnetic resonance imaging with electroencephalogram in XXXX syndrome.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity6256 :: ('MESH:D020437', 'Disease') :: ['hypoglossal nerve stimulation'] @entity27 :: ('MESH:D020181', 'Disease') :: ['upper airway obstruction in obstructive sleep apnea', 'OSA'] @entity1224 :: ('MESH:D000402', 'Disease') :: ['airway obstruction'] @entity386 :: ('MESH:D001049', 'Disease') :: ['apneas']
@entity27 :: (MESH:D020181,Disease) :: ['obstructive sleep apnea']
