BACKGROUND: Avoidance of allergen exposure is the basic preventive measure in reducing symptoms of immediate-type allergies. As room air cleaners were found to have no benefic effect on general health, their use has not been recommended. The purpose of this study was to evaluate the effect of a fresh air filtration system installed in the bedrooms of non-air-conditioned homes on hay fever symptoms. METHODS: In a placebo-controlled, double-blind, two-period, crossover study, we investigated the effectiveness of a fresh air filtration system installed in the bedrooms of volunteers suffering from hay fever. RESULTS:Volunteers only suffering from pollinosis reported an improvement of their allergy symptoms. We observed a significant decrease in nighttime hay fever symptoms and an increase in morning peak expiratory flow rates (PEFR). No effects were recognized in volunteers who additionally had perennial allergy. CONCLUSION: Based upon these results, the installation of fresh air filtration systems in bedrooms should be recommended for patients suffering from hay fever. Copyright 2003 S. Karger AG, Basel
RCT Entities:
BACKGROUND: Avoidance of allergen exposure is the basic preventive measure in reducing symptoms of immediate-type allergies. As room air cleaners were found to have no benefic effect on general health, their use has not been recommended. The purpose of this study was to evaluate the effect of a fresh air filtration system installed in the bedrooms of non-air-conditioned homes on hay fever symptoms. METHODS: In a placebo-controlled, double-blind, two-period, crossover study, we investigated the effectiveness of a fresh air filtration system installed in the bedrooms of volunteers suffering from hay fever. RESULTS: Volunteers only suffering from pollinosis reported an improvement of their allergy symptoms. We observed a significant decrease in nighttime hay fever symptoms and an increase in morning peak expiratory flow rates (PEFR). No effects were recognized in volunteers who additionally had perennial allergy. CONCLUSION: Based upon these results, the installation of fresh air filtration systems in bedrooms should be recommended for patients suffering from hay fever. Copyright 2003 S. Karger AG, Basel
Authors: Stuart Batterman; Liuliu Du; Edith Parker; Thomas Robins; Toby Lewis; Bhramar Mukherjee; Erminia Ramirez; Zachary Rowe; Wilma Brakefield-Caldwell Journal: Air Qual Atmos Health Date: 2013-12 Impact factor: 3.763
Authors: James L Sublett; James Seltzer; Robert Burkhead; P Brock Williams; H James Wedner; Wanda Phipatanakul Journal: J Allergy Clin Immunol Date: 2009-11-11 Impact factor: 10.793
Authors: Gennaro D'Amato; Stephen T Holgate; Ruby Pawankar; Dennis K Ledford; Lorenzo Cecchi; Mona Al-Ahmad; Fatma Al-Enezi; Saleh Al-Muhsen; Ignacio Ansotegui; Carlos E Baena-Cagnani; David J Baker; Hasan Bayram; Karl Christian Bergmann; Louis-Philippe Boulet; Jeroen T M Buters; Maria D'Amato; Sofia Dorsano; Jeroen Douwes; Sarah Elise Finlay; Donata Garrasi; Maximiliano Gómez; Tari Haahtela; Rabih Halwani; Youssouf Hassani; Basam Mahboub; Guy Marks; Paola Michelozzi; Marcello Montagni; Carlos Nunes; Jay Jae-Won Oh; Todor A Popov; Jay Portnoy; Erminia Ridolo; Nelson Rosário; Menachem Rottem; Mario Sánchez-Borges; Elopy Sibanda; Juan José Sienra-Monge; Carolina Vitale; Isabella Annesi-Maesano Journal: World Allergy Organ J Date: 2015-07-14 Impact factor: 4.084