Internal Nasal Valve and Its Significance
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ORIGINAL ARTICLE
Internal Nasal Valve and Its Significance V. Ashok Murthy • R. Raghavendra Reddy K. Pragadeeswaran
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Received: 20 October 2012 / Accepted: 12 January 2013 / Published online: 23 January 2013 Ó Association of Otolaryngologists of India 2013
Abstract Internal nasal valve (INV) is the narrowest area, of the nose where turbulence of the inspiratory and expiratory current takes place. This study analysis the significance of INV with respect to health and disease. Study design: Descriptive study/Prospective study. Study Centre: Tertiary Centre. 150 students were followed for 2 years after noting the endoscopic anatomic details of INV. The students who reported due to sinus/ear disease during this follow up period were again noted. The type of INV in health and disease were analysed. Septal deviation at the INV is noted in most of the cases of sinus/ear disease. It is advisable to correct the abnormality of INV if present simultaneously while clearing the ear/sinus pathology.
Aim
Keywords Internal nasal valve Septal deviation Sinusitis Acute otitis media Nasal septum Upper lateral cartilage
150 students, with no disease or allergy of nose or paranasal sinus were examined by nasal endoscopy and the type of INV were noted down.
To study the role of INV in health and disease of sinus conditions. Study Design Descriptive/Prospective study. Method Inclusion Criteria
Exclusion Criteria Introduction Internal nasal valve (INV) is the narrowest area of a nasal cavity [1]. Any reduction in this already crowded area, will lead to appreciable effect on the inspiratory and expiratory currents. This study analysis the various anatomic details of INV and its role in health and disease of the para nasal sinuses.
V. A. Murthy (&) R. R. Reddy K. Pragadeeswaran Department of ENT, PES Institute of Medical Science and Research, Kuppam 517 425, India e-mail: [email protected]
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Individuals with chronic nasal obstruction, previous nasal surgeries, use of nasal decongestants/spray, anatomical abnormalities detected on diagnostic nasal endoscopy, existing disease of ear, nose and paranasal sinuses. 150 students (300 nasal cavities) were examined by nasal endoscopy. The type of INV was noted for each individual. They were under follow-up for 2 years. Whenever these students reported sick, the diagnosis was noted in the list and at the end of 2 years the result were analyzed. Observation INV was classified based on endoscopic picture at the region of caudal border of upper lateral cartilage and
Indian J Otolaryngol Head Neck Surg (August 2013) 65(Suppl 2):S400–S401
anterior end if the inferior turbinate. The INV was categorized accordingly to the relation of caudal end of lateral cartilages with the septum [2].They are: convex, concave, sharp angle, blunt angle, twisted caudal border and angle occupied with septal body. Angle occupied by septal body was found in 32 %, sharp angle was found in 37.33 %, blunt angle types were in 23.66 %, other types forming the rest. The nasal cavity was narrow
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