The most common clinical and practical use of acoustic rhinometry for the rhinologic surgeon is in the assessment of quot;mixed" blockage. Mixed blockage is composed of reversible components (mucosal congestion, nasal valve collapse) and irreversible structural problems. The topographical location (depth) of obstruction in the nasal cavity can be assessed with acoustic rhinometry. Acoustic rhinometry can also document and compare the status of the nasal cavity before and after surgery. As a research tool, it can help the rhinologic surgeon assess the effect of surgical maneuvers (eg, placement of osteotomy) on nasal patency and physiology. Box 1 Practical uses of acoustic rhinometry.
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