Abstract
Objectives:
Determine the prevalence of multiple level obstruction and the frequency of their sites in cases of obstructive sleep apnea.
Methods:
The sample size of this descriptive cross sectional study was an inclusive sample including all patients presenting to the outpatient clinic of Suez Canal University Hospital, Ismaila Egypt complaining of snoring with or without obstructive sleep apnea (OSA) between January 1 and December 31. All patients were evaluated by Müller maneuver followed by polysomnography. Patients diagnosed with OSA were subjected to drug induced sleep endoscopy (DISE). Grades and patterns of obstruction were evaluated by NOHL classification.
Results:
Of thirty patients, nine (33%) showed multiple levels of obstructions. One had 25-50% obstruction in the oropharynx, 50-75 % obstruction in the hypopharynx, and a flappy epiglottis .Two had 50-75% obstruction in the oropharynx, different degrees of obstructions in the oropharynx, and a flappy epiglottis . Six had 75-100% of obstructions at both oropharynx and hypopharynx.
Conclusions:
From the above results management strategy of OSA should be reformed to improve the quality of management.
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