This is the most accurate endoscopic assessment in identifying the locations and pattern of obstruction in OSA patient. This is an procedure to be performed in hospital, where the patient will be induced into a sleep state by medications. Endoscopic assessment will then be performed and the sites of obstruction and patterns of obstruction will then be accurately diagnose.

Since this is a procedures performed in the operative theatre of hospital, it is then more time consuming for the patient and comes with a higher cost.

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