Computed tomography evaluation of internal nasal valve angle and area and its correlation with NOSE scale for symptomatic improvement in rhinoplasty

Abstract

IntroductionNasal obstruction is one of the most frequent otolaryngologic complaints; and the collapse of the internal nasal valve is one the main causes of the nasal air flow obstruction. ObjectiveWe aimed to evaluate internal nasal valve by using reformatted CT-scans pre- and post- rhinoplasty at 3 months and to assess its correlation to symptomatic improvement of nasal obstruction using the NOSE scale. MethodsA prospective observational study was conducted between March 2017–May 2018 in a tertiary care otorhinolaryngology center. We included patients suffering from nasal obstruction secondary to internal nasal angle collapse and nasal deformity. Patients with sinusitis, nasal polyposis, and nasal masses were excluded. ResultsTwenty consecutive patients underwent rhinoplasty, with a mean age (22.2 ± 2.8), with majority of males (n = 14; 70%). There was no significant correlation between pre- and post- CT-scans of the internal nasal valve angle/area and NOSE scores. A high significant difference was detected between mean pre- and post- NOSE scores (p < 0.0001), which was absent in CT-scan results. ConclusionReformatted CT-scans measurements of internal nasal valve area and angle were not of value. NOSE scores pre- and post- rhinoplasty had a significant value to determine degree of obstructive symptom improvement.