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Prado PC. Internal nasal dimensions of adults with nasal obstruction assessed by acoustic rhinometry. [Dissertation]. Bauru: Hospital de Reabilitação de Anomalias Craniofaciais, Universidade de São Paulo; 2009. Objective: To characterize the nasal geometry of adults with nasal obstruction due to septal deviation and/or turbinate hypertrophy by analyzing sectional areas and volumes of specific segments of the nasal cavity by means of acoustic rhinometry. Design: Prospective study. Setting: Laboratory of Physiology, HRAC-USP and Otorhinolaryngology Clinics, Hospital Estadual Bauru. Participants: Thirty patients with nasal obstruction complaints, of both sexes, aged 18 to 40 years, presenting septal deviation+turbinate hypertrophy (n=24), septal deviation only (n=5) or turbinate hypertrophy only (n=1) on clinical examination. Main Outcome Measures: Sectional areas measured at the three main deflections of the rhinogram (CSA1, CSA2, CSA3), their respective distances from the nostrils (dCSA1, dCSA2, dCSA3) and volumes at the 1.0-3.2cm (V1), 3.3-6.4cm (V2) and 7.012.0cm (V3) segments were evaluated, before and after nasal decongestion, by means of an Eccovision Acoustic Rhinometer. For analysis, the values from the right and left cavities were added. Results: Before nasal decongestion, mean values (±SD) obtained corresponded to 0.83±0.23cm(CSA1), 1.66±0.52cm (CSA2), 2.36±0.77cm (CSA3), 2.19±0.20cm (dCSA1), 4.01±0.33cm(dCSA2), 5.85±0.37cm(dCSA3), 2.77±0.51cm (V1), 6.52±1.99cm(V2), 26.00±9.62cm (V3). These values were significantly lower (p<0.05) than those set for adults without obstruction at the same laboratory. Decongestion caused CSA and V increases proportionally higher in the group with nasal obstruction, suggesting the involvement of a functional component. Twelve cases presented normal results, despite the presence of septal deviation and/or turbinate hypertrophy. Conclusion : The results showed, in most patients analyzed, significant impairment of nasal patency associated with nasal obstruction due to structural defects.

Dimensões internas nasais de adultos com obstrução nasal avaliadas por rinometria acústica