Document Detail

Acoustic rhinometry: Impact of external nasal dilator on the two first notches of the rhinogram.
MedLine Citation:
PMID:  22185733     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Acoustic rhinometry is more accurate in the anterior portion of the nasal cavities, from the nostril to the nasal valve (NV), the most important site of nasal obstruction. Literature presents different opinions regarding the anatomical correlation of the two notches at the beginning of the rhinogram curve in normal adult white individuals. The aim of this study was to present new data for a better understanding of the anatomic correlation of these two notches.
METHODS: This prospective study included 32 nasal cavities under the following conditions: (1) basal condition, (2) with external nasal dilator strip (ENDS), (3) after decongestion (0.05% oxymetazoline chloride applied as an aerosol spray), and (4) after decongestion with ENDS.
RESULTS: No statistically significant variation was observed in the cross-sectional area of the first notch (CSA1) after decongestion. However, there was a statistically significant increase in the CSA2 after ENDS.
CONCLUSION: Analysis of the results suggested that the first notch of the rhinogram refers to the nostril and the second notch refers to the NV as a whole. This study was part of the clinical trial NCT01411969 registered at
Carlos E N Nigro; Olavo Mion; João Ferreira Mello; Richard L Voegels; Renato Roithmann
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of rhinology & allergy     Volume:  25     ISSN:  1945-8932     ISO Abbreviation:  Am J Rhinol Allergy     Publication Date:    2011 Nov-Dec
Date Detail:
Created Date:  2011-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101490775     Medline TA:  Am J Rhinol Allergy     Country:  United States    
Other Details:
Languages:  eng     Pagination:  247-50     Citation Subset:  IM    
Division of Otolaryngology Clinic, Hospital of the University of São Paulo, SP, Brazil.
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