论文部分内容阅读
持续性氧疗,可使慢性阻塞性肺疾病(COPD)中老年患者生命延长。然而,何时处方氧疗,如何选择适合于每一病人供气系统,还存在着问题。本文旨在阐述家庭氧疗的益处,适应证和如何选择最方便有效地供气系统。 长期氧疗最主要好处在于对低氧血症患者(PaO_2<7.3kPa或SaO_2<88％)生存的影响。尽管其机理尚不清楚,越来越多的证据表明,氧疗能改善肺部血流动力学,减轻心脏负荷,增加氧供给。对重症氧血症COPD息者研究表明,氧疗前平均每年肺动脉压(PAP)增加0.16kPa,氧疗后使75％患者肺循环高压得以改善,PAP每年下降0.32kPa,但很少
Continuous oxygen therapy can prolong the life of elderly patients with chronic obstructive pulmonary disease (COPD). However, when prescription oxygen therapy, how to choose suitable for each patient’s gas supply system, there are still problems. This article aims to explain the benefits of home oxygen therapy, indications and how to choose the most convenient and effective gas supply system. The main benefit of long-term oxygen therapy is its effect on the survival of patients with hypoxemia (PaO 2 <7.3 kPa or SaO 2 <88%). Despite the fact that its mechanism is not clear, there is growing evidence that oxygen therapy improves pulmonary hemodynamics, reduces cardiac load, and increases oxygen supply. Studies on COPD in patients with severe oxythia showed that the average annual pulmonary arterial pressure (PAP) increased 0.16kPa before oxygen therapy and improved the pulmonary hypertension in 75% of patients after oxygen therapy. PAP decreased by 0.32kPa per year, but seldom