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. 2013 Sep-Oct;79(5):575-81.
doi: 10.5935/1808-8694.20130103.

Internal nasal dimensions of adults with nasal obstruction

[Article in English, Portuguese]
Inge Elly Kiemle Trindade  1 , Priscila Capelato Prado Conegliam, Sergio Henrique Kiemle Trindade, Norimar Hernandes Dias, Ana Claudia Martins Sampaio-Teixeira
Affiliations

Internal nasal dimensions of adults with nasal obstruction

[Article in English, Portuguese]
Inge Elly Kiemle Trindade et al. Braz J Otorhinolaryngol. 2013 Sep-Oct.

Abstract

Nasal septum deviation (SD) and turbinate hypertrophy (TH) increase the resistance to respiratory airflow and may impair nasal patency.

Objective: To characterize the nasal geometry of individuals with nasal obstruction secondary to SD and/or TH by means of acoustic rhinometry.

Method: This prospective study included 30 adults with complaints of nasal obstruction (NO) and SD + TH (n = 24), SD (n = 5) or TH (n = 1) seen by clinical examination. The cross-sectional areas of the three main dips of the rhinogram (CSA1, CSA2, CSA3), the distance between them and the nostrils (dCSA1, dCSA2, dCSA3), and the volumes of segments 1.0-3.2 cm (V1), 3.3-6.4 cm (V2), and 7.0-12.0 cm (V3) were measured before and after nasal decongestion (DN). For analysis, right and left cross-sectional areas and volumes were added and mean dCSA was calculated.

Results: Mean values (standard deviation) before ND were: 0.83 ± 0.23 (CSA1), 1.66 ± 0.52 (CSA2), and 2.36 ± 0.77 (CSA3) cm2; 2.19 ± 0.20 (dCSA1), 4.01 ± 0.33 (dCSA2), and 5.85 ± 0.37 (dCSA3) cm; 2.77 ± 0.51 (V1), 6.52 ± 1.99 (V2), and 26.00 ± 9.62 (V3) cm3; all values were lower than laboratory reference values (p < 0.05). ND led to proportionally greater increases of sectional areas and volumes in the NO group, suggesting an associated functional component. Individual analysis revealed 12 cases with normal results despite nasal obstruction.

Conclusion: Most patients with structural nasal obstruction had results suggestive of nasal patency impairment in acoustic rhinometry.

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Figures

Figure 1
Figure 1
A: Interview protocol developed for this study; B: Physical ENT examination protocol developed for this study.
Figure 2
Figure 2
Typical rhinogram of a patient with nasal obstruction, showing the sites used to measure cross-sectional areas (CSA), distance from nostrils (dCSA), and nasal volumes (V).
See this image and copyright information in PMC

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