What is the primary risk associated with the use of high doses of supplemental oxygen?

The primary risk associated with the use of high doses of supplemental oxygen is oxygen toxicity. When excessive oxygen is administered, it can lead to the formation of reactive oxygen species, which can damage lung tissue and other organs. This toxicity can affect the central nervous system, causing symptoms such as seizures, visual disturbances, and respiratory distress. Additionally, oxygen toxicity can result in lung damage, which may manifest as inflammation and an increased risk of acute respiratory distress syndrome (ARDS).

While hypotension, hypercapnia, and atelectasis can be concerns in certain situations involving supplemental oxygen, they are not the primary risks associated with high doses. Hypotension can occur due to various factors but is not directly linked to oxygen therapy itself. Hypercapnia refers to elevated carbon dioxide levels and is more commonly associated with conditions like COPD or inadequate ventilation rather than excessive oxygen. Atelectasis, or collapsed lung segments, can occur due to various reasons, including prolonged inactivity or inadequate ventilation, but it is not a direct result of high oxygen levels.