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People with COPD who need and use continuous oxygen therapy 24 hours a day tend to have a longer lifespan than those who use it only while awake (15 hours per day). In turn, individuals who use oxygen therapy 15 hours per day do better than those who use it only while they are sleeping. Publication Review By: Peter B. Terry, M.D., M.A. Published: 08 Aug 2011
Some people with COPD only develop low oxygen levels during exercise or sometimes during sleep. In such cases, oxygen can be prescribed for use just during those particular situations. COPD patients with right-sided heart failure, or with particularly high red blood cell counts, may also benefit from oxygen therapy.