Donner C F, Braghiroli A
Division of Pulmonary Disease, Medical Center of Rehabilitation, IRCCS, Veruno, Italy.
Monaldi Arch Chest Dis. 1996 Feb;51(1):72-3.
Liquid oxygen is a synonym for portable oxygen, as it combines a big cylinder with an easy-to-fill portable unit, suitable for exercise and use out-doors. The main drawback is its high cost, inherent in a home delivery system, which discouraged many nations from its introduction. The best candidates are patients able to move, who are still active and do not have psychological reticence to its use in public. Transtracheal systems and the advantage of a round the clock treatment and a reduction of flow rate, crucial both to lengthen the autonomy of portable units and to avoid flows higher than 4 L.min-1, which cannot be maintained. Finally, patients on liquid oxygen usually have a better adherence to treatment, mainly compared to those using a concentrator, possibly improving its effectiveness, which is notoriously dependent on total usage per day.
液氧是便携式氧气的同义词，因为它将一个大钢瓶与一个易于填充的便携式装置相结合，适合运动和户外使用。其主要缺点是成本高昂，这是家庭配送系统所固有的，这使得许多国家不愿引入它。最适合使用液氧的患者是能够活动、仍很活跃且在公共场合使用液氧没有心理障碍的人。经气管系统具有全天候治疗的优势，并且能降低流速，这对于延长便携式装置的续航时间以及避免流速高于4升/分钟（这种流速无法维持）至关重要。最后，使用液氧的患者通常比使用制氧机的患者对治疗的依从性更好，这可能会提高治疗效果，而治疗效果显然取决于每天的总使用量。
