Copd And Oxygen Use Should Copd Patient Have An Oxygen Tester, What Levels Should Oxygen Be Started? What Is A Safe Oxygen Level?

Should copd patient have an oxygen tester, what levels should oxygen be started? What is a safe oxygen level? - copd and oxygen use

I'm sorry to ask 3 questions, but only 5 points. Friends who suffer from COPD. The proportion of oxygen, 95-97. He is now 90th Nebuliser at home was told he could use it at night. I am afraid that this is a dangerous level, can be treated. My mother has the disease in their specialists, the opposite of oxygen started the first 10 years. Later started nebulizer. Everyone is different and this may be the protocol to have been there.