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rn目的探讨支气管激发试验(BPT)在慢性咳嗽诊断中的价值。方法对596例慢性咳嗽患者行BPT,检测其气道反应性。结果 596例慢性咳嗽患者中,BPT阳性177例。其中,160例患者最终确诊为咳嗽变异性哮喘(CVA),BPT诊断敏感性为90.39%,特异性为96.10%。病程“,”Objective To investigate the value of bronchial provocation test(BPT) in diagnosis of patients with chronic cough.Methods A total of 596 patients with chronic cough was prescribed to take BPT to estimate the responsiveness of the bronchus.Results Of 596 cases,117 cases were BPT positive,in whom 160 patients were diagnosed as cough variant asthma(CVA).The sensitivity for BPT to diagnose CVA was 90.39% and the specificity was 96.10%.The patients with disease course less than 3 months or those with lung function of FEV1/FVC<70% had a low sensitivity(P<0.05).However,the high sensitivity was found in the patients whose symptom occured at night or morning(P<0.05).Conclusion BPT is a simple and effective method in the diagnosis of CVA,especially in the patients with chronic cough at night or morning.