Bosi G P, Dotti A, Tassi G F, Feroldi P
Minerva Med. 1981 Dec 8;72(49):3333-6.
An account is given of the employment of an O2 concentrator (De VO2 955) in chronic bronchopneumopaths with respiratory insufficiency and pulmonary hypertension. An assessment was made of the gas supply modalities, particularly with Venturi masks. In patients with normal or low ventilation, 24% and 28% FiO2 masks gave suitable results, whereas those with a higher concentration were unusable, since the present FiO2 value was not reached. This was probably due to the fact that there is a fall in O2 concentration at high low flow rates, and as a result of an insufficient Venturi effect.
本文介绍了在患有呼吸功能不全和肺动脉高压的慢性支气管肺炎患者中使用氧气浓缩器（De VO2 955）的情况。对气体供应方式进行了评估，特别是使用文丘里面罩的情况。在通气正常或较低的患者中，24%和28%吸氧浓度的面罩效果良好，而那些吸氧浓度更高的面罩无法使用，因为无法达到当前的吸氧浓度值。这可能是由于在高低流量下氧气浓度会下降，以及文丘里效应不足所致。
