呼吸道感染是引起哮喘发作的重要因素,且常使哮喘加重,临床上常伴咳嗽与脓痰。病毒(尤其是鼻病毒)感染常是儿童哮喘发作的诱因,而成人尚难以定论。细菌学检查发现,这些病人气管分泌物中的细菌与无呼吸道疾病病人无显著差别。哮喘患儿应用氨苄青霉素与安慰剂对照,治疗组并不比安慰剂组好,尽管如此,抗菌素仍广泛用于急性哮喘的治疗。为此,作者通过随机双盲试验分别给予氨苄青霉素与安 Respiratory tract infections are an important cause of asthma attacks, and often make asthma worse, often accompanied by clinical cough and purulent sputum. Virus (especially rhinovirus) infection is often the cause of asthma attack in children, but adults are still hard to determine. Bacteriological examination found no significant difference between the bacteria in the tracheal secretions of these patients and those without respiratory disease. The use of ampicillin and placebo in asthmatic children was not better than placebo in the treatment group, but antibiotics are still widely used in the treatment of acute asthma. To this end, the authors were given ampicillin and amphetamines by randomized double-blind trials