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超声雾化蒸馏水激发试验应用于支气管哮喘(哮喘)的气道高反应性评价始于七十年代末期,其致气道狭窄的机制可能与气道内渗透压改变引起炎性细胞释放介质、神经-受体的相互作用等因素有关。反应出现的阳性率为39%～100%之间,反应形式主要表现为速发反应、少数患者表现为迟发反应和不应期现象。多数学者采用平静潮气吸入法。该试验有助于某些非典型可疑哮喘病例的诊断、病情和预后判断,并为哮喘发病机制的探讨提供了一条途径。
Ultrasound nebulized distilled water challenge test The evaluation of airway hyperresponsiveness used in bronchial asthma (asthma) began in the late seventies. The mechanism of airway stenosis may be related to the change of airway osmotic pressure that causes the release of inflammatory cells, nerve- Recipient interaction and other factors. The positive rate of the reaction was between 39% and 100%. The reaction mode mainly showed immediate reaction and a few patients showed delayed reaction and refractory period. Most scholars use the method of calm moisture inhalation. The trial is helpful for the diagnosis, condition and prognosis of some atypical suspicious asthma cases and provides a way to explore the pathogenesis of asthma.