Chronic oxygen therapy is indicated for emphysema when resting SpO2 falls below which value?

Chronic oxygen therapy is indicated for emphysema when resting SpO2 falls below which value?

• A. 88 percent
• B. 90 percent
• C. 92 percent
• D. 94 percent

Answer: (A)

Chronic oxygen therapy is started when there is resting hypoxemia, meaning the body isn’t getting enough oxygen even while at rest. Resting SpO2 at or below 88% on room air indicates this level of chronic hypoxemia in emphysema, and initiating long-term oxygen therapy has been shown to improve survival and reduce complications in these patients. Values higher than 88% at rest do not carry the same proven survival benefit, even though oxygen might be used during exertion if needed. So the threshold used for indicating chronic oxygen therapy is 88% or lower.

Chronic oxygen therapy is started when there is resting hypoxemia, meaning the body isn’t getting enough oxygen even while at rest. Resting SpO2 at or below 88% on room air indicates this level of chronic hypoxemia in emphysema, and initiating long-term oxygen therapy has been shown to improve survival and reduce complications in these patients. Values higher than 88% at rest do not carry the same proven survival benefit, even though oxygen might be used during exertion if needed. So the threshold used for indicating chronic oxygen therapy is 88% or lower.