الفهرس 
Historical ReviewOnly 14 pages are availabe for public view
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Abstract
The nasal valves are considered the passage for transmition of the inhaled air from the external environment to the nasal cavity. The nasal valves are classified into external and internal nasal valves. The nasal valves regulate the nasal airflow through inward and outward mobility during breathing. The nasal valve area acts like accelerator, turbulizer and diffuser of the inspired air. The nasal valve area is considered to be responsible for up to half of the airflow resistance of the entire respiratory tract. Thorough history, careful patient examination, and proper investigation are important in diagnosis and management of nasal valves disorders. Nasal valves disorders may be anatomical disorders (stenosis) or functional ones (collapse), or combined stenosis and collapse. Numerous surgical and non-surgical methods are described for correction of nasal valves disorders. Surgical interference is used in correction of vestibular stenosis, correction of caudal septal deviation, correction of obstruction secondary to ITH, and correction of INV disorders. The non-surgical methods are used for strengthening the nasal valves and the attached muscles, and for dilatation of the nasal valves.