Oxygen toxicity is a condition in which which occurs?

Oxygen toxicity is a condition in which which occurs?

• A. Decreased levels of oxygen in the blood result in free radical production.
• B. Cellular tissue damage occurs from excessive oxygen levels in the blood.
• C. Excessive blood oxygen levels cause the hypoxic patient to stop breathing.
• D. Significantly low levels of oxygen in the blood damage the cellular tissue.

Answer: (B)

Oxygen toxicity happens when too much oxygen in the blood leads to cellular injury from oxidative stress caused by reactive oxygen species. The defining effect is tissue damage from excessive oxygen exposure, not a lack of oxygen or a breathing stoppage. So the best description is cellular tissue damage occurring due to excessive oxygen levels in the blood. The other ideas aren’t correct because they describe low oxygen, a breathing suppression mechanism, or low oxygen levels rather than toxicity from too much oxygen. In practice, this means oxygen must be titrated to avoid unnecessary prolonged exposure to high concentrations.

Oxygen toxicity happens when too much oxygen in the blood leads to cellular injury from oxidative stress caused by reactive oxygen species. The defining effect is tissue damage from excessive oxygen exposure, not a lack of oxygen or a breathing stoppage. So the best description is cellular tissue damage occurring due to excessive oxygen levels in the blood. The other ideas aren’t correct because they describe low oxygen, a breathing suppression mechanism, or low oxygen levels rather than toxicity from too much oxygen. In practice, this means oxygen must be titrated to avoid unnecessary prolonged exposure to high concentrations.