Richards R, Saunders M
Department of Respiratory Medicine, Llandough Hospital, Cardiff.
Thorax. 1993 Nov;48(11):1186-7. doi: 10.1136/thx.48.11.1186.
The efficacy of dry powder inhalers is dependent on the inspiratory flow rate at which they are used. The resistance to airflow through five different dry powder inhaler devices was measured. The devices were shown to vary significantly, with the Turbohaler having the highest resistance. We suggest that the performance of dry powder inhalers should be assessed at comparable pressure drops producing clinically relevant inspiratory flow rates for each device.
干粉吸入器的疗效取决于其使用时的吸气流量。测量了五种不同干粉吸入器装置的气流阻力。结果显示这些装置差异显著，其中都保吸入器的阻力最高。我们建议，应在能为每种装置产生临床相关吸气流量的可比压力降下评估干粉吸入器的性能。
