title: Change in minimal cross sectional area using the new nasal dilator, "Airplus".
abstract: In 36 persons without nasal complaints nasal cavities were investigated using acoustic rhinometry (Rhin 2000), to study the effect of a nasal dilator (ND) named "Airplus". The minimal cross sectional area (MCA) of both the right and left side was assessed before and after application of the ND, and the total MCA was calculated as the sum of the right and left side. In 8 persons the MCA was measured before and after 2 applications of the ND. In 8 persons the MCA was measured before, immediately after and 2 hours after application of the ND. In trial one the median total MCA was 1.37 cm2 before and 1.96 cm2 after application of the ND. This corresponds to an increase of 43%, p < 0.000-01. In trial two the median total MCA was increased from 1.37 cm2 respectively 1.35 cm2 to 1.98 cm2 respectively 2.01 cm3, an increase of 45% respectively 49%, p < 0.008 in both. In trial three the median total MCA was 1.21 cm2 before and 1.95 cm2 immediately after application and 1.93 cm2 after 2 hours. The increase was 61 and 59%, p < 0.008 in both. The results show that the "Airplus" nasal dilator improves significantly the MCA, it was possible to reproduce the effect and it was stable in the recorded period.
authors.affiliation: Department of Otorhinolaryngology, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark.
authors.forename: H
authors.initials: H
authors.lastname: Nielsen
authors.forename: S
authors.initials: S
authors.lastname: Orntoft
authors.forename: T G
authors.initials: TG
authors.lastname: Nielsen
mesh_terms: D000162:Acoustics; D004106:Dilatation / Q000295:instrumentation; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D009296:Nasal Cavity / Q000033:anatomy & histology*; D015508:Nasal Obstruction / Q000628:therapy*