【支气管高反应性病理生理】支气管高反应性(Bronchial hyperreactivity)又称高应答性(Hyperresponsiveness)定义为:对正常气道只能引起很小或无反应的刺激,发生气道过度收缩反应。近几年,由于临床上广泛开展支气管激发试验测定小气道敏感性,对支气管高反应性的发生机理有了新的认识。从病理生理角度归纳为以下几个方面。 Bronchial Hyperresponsiveness Pathophysiology Bronchial hyperreactivity, also known as Hyperresponsiveness, is defined as the ability to cause only modest or unresponsive irritation of the normal airways and over-contraction of the airways. In recent years, due to the extensive clinical trials of bronchial provocation test small airway sensitivity, the mechanism of the occurrence of bronchial hyperresponsiveness has a new understanding. From the pathophysiological point of view summarized as the following aspects.