论文部分内容阅读
许多患有可逆性气道机能障碍或哮喘的病人,当试图进行身体锻炼时常发生气促、咳嗽和喘息。在寒冷和干燥的环境中锻炼时,这些症状尤其容易发生。生理上,这一异常表现为阻塞性气道机能障碍试验的特征。本文主要对这一问题进行评述,对运动诱发的支气管痉挛(exercise-indused bronchospasm,EIB)的生理学及其治疗进行探讨。对此问题总的看法可能所有哮喘病患者均容易发生 EIB。对运动的反应其特征为运动中第1秒钟用力呼气量(forced expiratory volume in the firstsecond,FEV1)下降,或最大呼气流速(peak exp-iratory flow rate,PEFR)较运动前增大10%。
Many patients with reversible airway dysfunction or asthma often experience shortness of breath, cough and wheezing when attempting to exercise. These symptoms are particularly prevalent when exercising in cold and dry environments. Physiologically, this abnormality manifests itself as a characteristic of the obstructive airway dysfunction test. This article mainly reviews this issue and discusses the physiology of exercise-induced bronchospasm (EIB) and its treatment. The general opinion on this issue may be that EIB is prone to occur in all asthmatics. The response to exercise was characterized by a decrease in forced expiratory volume in the first second (FEV1) or a peak expiratory flow rate (PEFR) greater than 10 before exercise %.