objective to asses the effect of anticholinergic agent on the treatment of child asthma and to study the changes in peak expiratory flow rate (pefr).
目的观察抗胆堿能受体阻滞剂在儿童哮喘治疗中的作用及肺功能呼气峰流速(pefr)的变化。
symptom score and pulmonary function expressed as peak expiratory flow(pef), peak expiratory flow rate (pefr) and forced expiratory volume in one second (fev1) were recorded.