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Updated: May 6, 2026

Endoscopic Septoplasty with Limited Two-line Resection: Minimally Invasive Surgery for Septal Deviation
Published on: June 20, 2018
Internal nasal dimensions of adults with nasal obstruction
Inge Elly Kiemle Trindade1, Priscila Capelato Prado Conegliam, Sergio Henrique Kiemle Trindade
1Faculdade de Odontologia de Bauru, Universidade de São Paulo.
Unlabelled:
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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