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咳嗽变异性哮喘 (CVA)是一种以慢性咳嗽为主要或唯一临床表现不伴有哮鸣音的一种特殊类型哮喘 ,CVA是近年来为国内外许多学者的重视 ,为人们所认识的一种哮喘类型。此类患者常无典型哮喘所表现的临床特征 ,而仅表现为长期 (≥ 2个月 )顽固性咳嗽。1 对象和方法1.1 对象 随机
Cough Variant asthma (CVA) is a special type of asthma characterized by chronic cough as the primary or only clinical manifestation without wheeze, and CVA is valued by many scholars both at home and abroad in recent years, Asthma type. Such patients often have no clinical features typical of asthma, but only for the long-term (≥ 2 months) stubborn cough. 1 objects and methods 1.1 random objects