A video that depicts the opening of a very atelectatic maxillary sinus. 0 and 45 degree scopes were used, as well as curved instruments including a microdebrider tip with a 60 degree curve.
A retracted right eardrum with an indrawn atelectatic segment is shown. Performation of Valsava manoeuvre (blowing with the nose pinched and lips closed) causes bulging, collapse is the result of Toynbee...
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