How does smoking history affect oxygen therapy?

Smoking history significantly impacts lung function and, consequently, affects oxygen therapy requirements. When an individual has a history of smoking, it can lead to chronic obstructive pulmonary disease (COPD), emphysema, or other respiratory conditions. These conditions impair the lungs' ability to oxygenate blood effectively, which can result in lower baseline oxygen levels and increased work of breathing.

As lung function declines, the body may require a higher supplemental oxygen flow to maintain adequate oxygen saturation levels and meet the metabolic needs of tissues. Therefore, individuals with a smoking history may exhibit different oxygen needs compared to non-smokers, requiring careful assessment and adjustment of oxygen therapy to ensure that they receive the appropriate amount of oxygen for their specific condition. Choosing the correct flow rate and monitoring oxygen saturation becomes crucial in these cases to prevent hypoxia and potential complications.