What is the clinical value of rhinomanometry?

Updated: Jul 13, 2021
  • Author: Samuel J Lin, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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The clinical value of rhinomanometry relates to degree of obstruction. The 2 major types of obstruction are mucosal hypertrophy and structural deformity. Rhinomanometry is performed with and without decongestion and total resistance is calculated. Resistance above 0.3 Pa/mL/s is usually symptomatic. [6] The one caveat of rhinomanometry is that no resistance can be measured when the nasal passage is completely obstructed.

Decongestion is used to determine a mucosal cause of nasal resistance. Marked reduction in resistance with decongestion suggests mucosal disease. Decongestion causing less than a 35% decrease in resistance suggests a structural cause of nasal obstruction rather than a mucosal cause. [6]

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