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气道高过敏性(AHR)增加了气道对各种刺激的收缩反应,是儿童严重哮喘的主要特点和决定因素。美国研究人员用醋甲胆碱激发试验测定AHR,并对1041 名儿童进行了5年的随机研究。结果发现,基础状态时
Airway hyper-sensitivity (AHR) increases the airway contractile response to various stimuli and is a major characteristic and determinant of severe asthma in children. American researchers measured the AHR using a methacholine challenge test and 1041 children underwent a 5-year randomized study. The results found that the basic state