Question
According to GOLD guidelines, what is the approximate cutoff value of FEV₁ (% predicted) associated with clinically significant resting hypoxemia in chronic COPD patients?
| A. |
20% |
| B. |
30% |
| C. |
40% |
| D. |
50% |
Show Answer
|
Correct Answer � B Explanation |
 |
– According to GOLD guidelines, an FEV1 less than approximately 30 percent predicted is commonly associated with severe airflow limitation and clinically significant resting hypoxemia in COPD patients.
– At this level of lung function impairment, gas exchange is substantially compromised, leading to low arterial oxygen levels.
– This cutoff is also used to identify candidates for long-term oxygen therapy due to resting hypoxemia.