Diagnostic nasal endoscopy I pass

By

Dr. T. Balasubramanian M.S. D.L.O.

The process of examination can be divided into three passes:

1. First pass / inferior pass
2. Second pass
3. Third pass.

First pass:  In this the endoscope is introduced along the floor of the nasal cavity.  Middle turbinate is the first structure to come into view.  Its superior attachment is studied.  Inferior surface of the middle turbinate is studied.  As the endoscope is slid posteriorly the adenoid tissue comes into view.  On the lateral surface of the nasopharynx the pharyngeal end of eustachean tube can be identified.  Its function can be assessed by asking the patient to swallow.  The endoscope is now turned 90 degrees in the opposite direction, the uvula and soft palate comes into view.  The endoscope is again rotated by 90 degrees in the same direction, the opposite side pharyngeal end of eustachean tube is visualised.  In this field both eustachean tubes become visible. 





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