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 .

结论：对重度COPD稳定期患者在常规治疗下雾化吸入支气管扩张剂能改善其临床气促症状，而联合应用非诺特罗和异丙托溴铵疗效优于任何一药单独应用。