Can Oxygen Help Treat Emphysema?

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2 Answers

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What's the normal oxygen saturation level for a person on oxygen at 2 liters/minute?
normally the oxygen saturation level is above 96%. no matter how much is the  Inhaled oxygen flow, you just keep the oxygen saturation level above 96%. if you oxygen saturation level is  already above 96%, you don't need to take oxygen.
smoking  and oxygen go hand and hand alot . i am a smoker and need to stop smoking ! is smoking the major cause for low oxygen levels ? I know some people  dont smoke .
I think the reason is your lung has been damaged by smoking, not the smoke itself lowering the oxygen.