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• W1567111457 abstract "Objectives/Hypothesis Nasal obstruction is the principal symptom that drives patients with rhinosinus disease to seek medical treatment. However, patient perception of obstruction often bears little relationship to actual measured physical obstruction of airflow. This lack of an objective clinical tool hinders effective diagnosis and treatment. Previous work has suggested that the perception of nasal patency may involve nasal trigeminal activation by cool inspiratory airflow; we attempt to derive clinically relevant variables following this phenomenon. Study Design Prospective healthy cohort. Methods Twenty‐two healthy subjects rated unilateral nasal patency in controlled room air using a visual analog scale, followed by rhinomanometry, acoustic rhinometry, and butanol lateralization thresholds (BLTs). Each subject then immediately underwent a computed tomography scan, enabling the construction of a real‐time computational fluid dynamics (CFD) nasal airway model, which was used to simulate nasal mucosa heat loss during steady resting breathing. Results Among all measured and computed variables, only CFD‐simulated peak heat loss posterior to the nasal vestibule significantly correlated with patency ratings ( r = −0.46, P < .01). Linear discriminant analysis predicted patency categories with 89% success rate, with BLT and rhinomanometric nasal resistance being two additional significant variables. As validation, CFD simulated nasal resistance significantly correlated with rhinomanometrically measured resistance ( r = 0.41, P < .01). Conclusions These results reveal that our noses are sensing patency via a mechanism involving localized peak nasal mucosal cooling. The analysis provides a strong rationale for combining the individualized CFD with other objective and neurologic measures to create a novel clinical tool to diagnose nasal obstruction and to predict and evaluate treatment outcomes. Level of Evidence 4 Laryngoscope , 124:589–595, 2014" @default.
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• W1567111457 date "2013-06-28" @default.
• W1567111457 modified "2023-10-18" @default.
• W1567111457 title "Regional peak mucosal cooling predicts the perception of nasal patency" @default.
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• W1567111457 doi "https://doi.org/10.1002/lary.24265" @default.
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