Abstract
Twenty one patients 7 men and 14 women, 10 to 51 years old, with nasal allergy to house dust were subjects of this study. Each had at least a two year history of nasal symptoms related to house dust. Six patients had severe symptoms, 9 had moderate symptoms and 6 had slight symptoms. All patients selected had a 3+ or more intradermal skin test reaction to crude house dust extract. None of the patients had nasal polyps. A high-efficiency air cleaner (Green Safety Co. Ltd.) consists of the prefilter, the ionizer and a special filter. It has an electrified collector with a high voltage supply to conductive separators and a precharger for particle charging. The air flow is 1.2m3/min at the low setting and 3.6m3/min at the high setting. The noise level in 31dB in low and 37dB in high. Efficacy of the air cleaner for house dust nasal allergy was evaluated in 21 patients. In general, the effects on nasal symptoms were observed in 67% and 43% showed excellent results. The air cleaner is a useful therapy for house dust nasal allergy.
