Under the optimum conditions , quantitative determination for ractopamine , isoxsuprine , ritodrine and fenoterol was carried out by DPV .
在最佳实验条件下，采用DPV对莱克多巴胺以及异克舒令、利托君和非诺特罗进行了定量测定。
AIM : To observe the effect of fenoterol and ipratropium bromide alone or combined in the treatment of childhood acute paroxysm of asthma .
目的：观察非诺特罗、异丙托溴铵单用及联合用药治疗小儿哮喘急性发作的疗效。
Conclusions : These bronchodilator agents routinely used can improve the symptom of dyspnea in severe COPD patients at stable stage , but the effects of combined administration of fenoterol and ipratropium bromide are obviously more satisfactory .
