支气管激发试验和扩张试验在咳嗽变异型哮喘诊断中的应用

目的 :探讨支气管激发试验和支气管舒张试验在诊断咳嗽变异型哮喘 (CVA)中的差别。方法 :把 3 0例咳嗽变型哮喘病人按基础肺功能FEV1 FVC分为A组 (≥ 70 % )、B组 ( <70 % ) ,分别进行支气管激发试验和扩张试验 ,并对两组患者支气管激发试验和扩张试验的阳性率进行比较。结果 :咳嗽变异型哮喘病人基础肺功能FEV1 FVC≥ 70 %者占 80 %。支气管激发试验在两组不同基础肺功能中的阳性率 (敏感性 )都远远超过扩张试验 (P≤ 0 .0 5 ) ,有显著性差异。尤其在CVA的早期。结论 :对慢性咳嗽而基础肺功能又较好的病人如怀疑CVA ,应首选支气管激发试验

The Role of Bronchial Provocation Test and Dilation Test in the Diagnosis of Cough Variant Asthma

Objective: To investigate the value of bronchial provocation test and dilation test in the diagnosis of cough variant asthma(CVA). Methods: 30 patients with cough variant asthma were divided into two groups by their basic lung function. Bronchial provocation test and dilation test were implemented on all of them. The positive rate of them was compared respectively. Results: Over 80% of the CVA patients had basic lung function FEV/FVC≥70%.The sensitivity of the bronchial provocation test was significantly higher than that of the dilation test(P≤0.05), especially in the early stage of CVA. Conclusion: Bronchial provocation test was the first choice to the chronic cough patients with relatively high lung function.