Rhinomanometry

The Rhinomanometry is the manometry (from the Greek. Manos "thin, permeable" for and the Greek. Suffix -metrie for "dimension") of the nose (Greek. Rhis ). In other words, rhinomanometry is a measurement method used to determine the air resistance when breathing through the nose.

With the help of a special breathing mask, the differential pressure between the space in front of the nostril and the oral cavity is measured during inhalation and exhalation .

Due to the turbulent flow inside the nose, there is a non-linear relationship between differential pressure and volume flow : ${\ displaystyle \ Delta p}$ ${\ displaystyle {\ dot {V}}}$

{\ displaystyle \ Delta p \ thicksim {\ dot {V}} ^ {2}}

Further development of rhinomanometry to rhinoresistometry

The Rhinoresistometry is a computerized measurement type to objectify the nasal obstruction, which is based on the principles of Rhinomanometry.

On the basis of the laws of flow dynamics, software was developed to calculate rhinologically relevant parameters from the rhinomanometrically measured values, which allows the narinochoanal pressure difference and the tidal volume to be determined. The examination procedure corresponds to that for a rhinomanometry.

The inspiratory and expiratory resistance depending on the volume velocity of both sides of the nose are calculated before and after the swelling has subsided and entered in a diagram. Compared to normal values, the doctor can distinguish a swelling-related nasal breathing obstruction from a structural one ( septal deviation, etc.). Information can also be gathered about the turbulence behavior in the nose and the suction of the alar cartilage.

Others

In 1992, the German Research Foundation (DFG) funded the projects Rhinological Function Diagnostics Using Computer Simulation of the Breathing Flow in the Nose and Combination of Rhinoresistometry with Acoustic Rhinometry under the direction of Gunter Mlynski and José Luis Encarnação , which contributed significantly to the development of rhinoresistometry.

Individual evidence

↑ DFG project rhinological functional diagnostics by means of computer simulation of the respiratory flow in the nose and combination of rhinoresistometry with acoustic rhinometry (since 1992)
↑ DFG project rhinological functional diagnostics using computer simulation of the breathing flow in the nose and combination of rhinoresistometry with acoustic rhinometry (1992 to 2003)

literature

Jürgen Eichler : Introduction to the technology of rhinomanometry: Applications in d. Rhinology Allergology. Berlin, Chicago, London, São Paulo, Tokyo: Quintessenz-Verlag 1988, ISBN 3-87652-279-X .
Functional diagnostic investigation of healthy test persons to determine rhinoresistometric, rhinomanometric and acoustic-rhinometric reference values , dissertation presented by Christina Enßen, 2005

[1] DFG project rhinological functional diagnostics by means of computer simulation of the respiratory flow in the nose and combination of rhinoresistometry with acoustic rhinometry (since 1992)

[2] DFG project rhinological functional diagnostics using computer simulation of the breathing flow in the nose and combination of rhinoresistometry with acoustic rhinometry (1992 to 2003)