Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases
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Zhonghua Jie He He Hu Xi Za Zhi · Oct 1999
Randomized Controlled Trial Clinical Trial[The study of oxygen-conserving nasal cannula and evaluation of it's oxygen saving ratio in treatment].
To study the oxygen-conserving nasal cannula(CNC), and to evaluate it's oxygen saving benefit ratio in COPD patients. ⋯ It was confirmed that CNC saved oxygen at different flows of oxygen, and the oxygen saving benefit ratio was higher at lower flows than that at higher flows.