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Eur Ann Allergy Clin Immunol. 2012 Apr;44(2):83-5.

Nasal filters in prevention of seasonal rhinitis induced by allergenic pollen grains. Open clinical study.

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Department of Chest Diseases, Division of Pneumology and Allergology, High Specialty "A. Cardarelli" Hospital, Naples, Italy.


Nasal filters (Sanispira) might represent a novel approach in preventing exacerbations of symptoms of seasonal allergic rhinitis by reducing pollen access to nasal cavities. Female and male voluntary patients between the ages of 18 and 64 years living in Naples area and affected by allergic rhinitis were recruited in an open clinical study. All were allergic to Parietaria pollen as assessed by skin-prick and/or RAST test with or without associated sensitization to other pollens such as Gramineae and Olea europaea. A pollen count was also carried out from 10th April until 30th of June 2011. The results of our study show positive statistical differences between the scores of common nasal symptoms and the reduced use of antihistaminic drugs in patients using nasal filters in comparison to non users. Nasal filters constitute a useful mean to reduce symptoms of seasonal allergic rhinitis in patients suffering from pollen allergy.

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