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  • Title: Acoustic rhinometry and rhinomanometry in the evaluation of nasal patency of patients with nasal septal deviation.
    Author: Szücs E, Clement PA.
    Journal: Am J Rhinol; 1998; 12(5):345-52. PubMed ID: 9805535.
    Abstract:
    The aim of the present study was to assess the clinical utility of acoustic rhinometry (AR) compared with active anterior rhinomanometry (AAR) in the evaluation of nasal patency in subjects with nasal septal deviation. Fifty patients were divided into three groups based upon the part of the nasal cavity where the septal deviation was situated (anterior: up to 2.5 cm; middle: between 2.5 and 4.5 cm; posterior: between 4.5 and 8 cm measured from the columella). The control group consisted of 15 subjects with no nasal complaints and no history of nasal disease. Inspiratory and expiratory nasal airway resistance (NAR) at 75 Pa and at 150 Pa before and after decongestion were measured by AAR. Minimal Cross-sectional Area (MCA), distance of MCA, and nasal volume (Vol) were measured before and after decongestion by AR (Rhino 2000). Subjective nasal patency was assessed by Visual Analogue Score (VAS). In the statistical analysis the deviated unilateral nasal cavities were compared with the randomly chosen unilateral nasal cavities of normal subjects. Both techniques AR and AAR were sufficiently sensitive to reveal severe deviations in the anterior nasal cavity (MCA, Volant, NAR75, NAR150, p < 0.05). The techniques were less sensitive in cases of middle and posterior deviations (MCA, Volmid, Volpost, MCAmid, MCApost, NAR75, p > 0.05). The nondecongested inspiratory and expiratory NAR at 150 Pa were the only parameter that differed from normal in cases of posterior deviations. The VAS correlated better with NAR than with MCA. MCA correlated more frequently with expiratory than with inspiratory NAR.
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