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气道过敏性属于变态反应的范畴,是指非特异性变态反应而言。狭义称为气道过敏性。慢性阻塞性肺疾患,特别是支气管哮喘病人均存在变态反应,各种外因如粉尘、SO_2等刺激性气体、冷空气等,还有支气管平滑肌收缩药如组织胺(histamine)、乙酰胆硷(acetylch-oline)、乙酰甲胆硷(methacholine)等,均可引起变态反应。既往用皮内试验、IgE痰嗜酸细胞等项目检查过敏性,虽然变态反应阳性,但气道过敏性并不一定是阳性。基于气道过敏性的气道狭窄是可逆性变化,气道过敏性的检查,在临床上对阻塞性肺疾患是极重要
Airway allergy is a category of allergy, refers to the non-specific allergic reaction. Narrowly known as airway allergy. Chronic obstructive pulmonary disease, especially in patients with bronchial asthma are allergic reactions, a variety of external causes such as dust, SO2 and other irritating gases, cold air, and bronchial smooth muscle contractile drugs such as histamine (histamine, acetylcholine -oline), methacholine, etc., can cause allergic reactions. Past use of intradermal test, IgE sputum eosinophil and other items check allergy, although allergic positive, but airway allergy is not necessarily positive. Airway stenosis, which is based on airway allergy, is a reversible change in airway hyperresponsiveness and is clinically important for obstructive pulmonary disease