In:
Otolaryngology–Head and Neck Surgery, Wiley, Vol. 147, No. 6 ( 2012-12), p. 1148-1153
Abstract:
To identify a correlation in terms of airway obstruction between awake and sleep apnea using spiral computed tomography (CT). Study Design Case series with planned data collection. Setting College medical center. Methods Sixty‐one patients diagnosed with obstructive sleep apnea/hypopnea syndrome (OSAHS) underwent CT scans under 3 conditions: quiet breathing while awake, the end of deep inspiration during wakefulness, and apnea while asleep. The upper airway morphology under the 3 conditions was compared, and the accuracy of the obstructive planes as determined by CT scans under the 2 awake conditions was analyzed while considering the obstructive planes that occurred during apnea as a reference. Results The differences in the anteroposterior diameter, lateral dimension, and cross‐sectional area of the retropalatal and retroglossal regions among the 3 states were statistically significant. Obstruction of the retropalatal region occurred in 100%, whereas retroglossal obstruction occurred in 44.3% of the 61 cases during sleep apnea. The coincidence rate between the awake quiet breathing and the sleep apnea was 85.2% in the retropalatal obstruction and 52.5% in the retroglossal obstruction. The coincidence rate between the awake deep inspiration and the sleep apnea was 82.0% in the retropalatal obstruction and 54.1% in the retroglossal obstruction. Conclusion The main obstructive plane in patients with OSAHS was the retropalatal region. An awake upper airway CT scan can properly diagnose palatopharyngeal obstruction; however, it is not suitable for detecting retroglossal obstruction.
Type of Medium:
Online Resource
ISSN:
0194-5998
,
1097-6817
DOI:
10.1177/0194599812459461
Language:
English
Publisher:
Wiley
Publication Date:
2012
detail.hit.zdb_id:
2008453-5
