A rhinomanometric analysis for male subjects

Abstract

The circadian variation of nasal respiratory resistance of fifteen adult male subjects was investigated using a rhinomanometry (RYNO2000) during daytime (9 a.m. to 6 p.m.). Results were as follows. 1. Fourteen subjects showed nasal cycle during observation period, who showed symptoms of nasal cycle with a period of 1 to 2 hrs. And one subject could not be detected the nasal cycle. 2. The variation per hour of nasal resistance is a little. 3. There was no significant difference in total nasal respiratory resistance. These results indicated that evaluation of the nasal airway respiratory resistance is reliable and informative for routine orthodontic clinics.