What is NOT a common symptom of CNS oxygen toxicity?

CNS oxygen toxicity is primarily a result of elevated partial pressures of oxygen, typically experienced during deep dives when using high concentrations of oxygen mixtures. The common symptoms associated with CNS oxygen toxicity include convulsions, visual impairments, and various neurological disturbances.

Shortness of breath is not typically considered a direct symptom of CNS oxygen toxicity. Instead, it is more commonly associated with respiratory issues or high carbon dioxide levels rather than the neurological effects that characterize CNS toxicity. Convulsions reflect the neurological impact of high oxygen levels, visual impairment can occur due to the effects of oxygen on the retina, and other symptoms may include dizziness or confusion.

In contrast, joint pain does not have a direct connection to CNS oxygen toxicity and could arise from other factors, such as nitrogen narcosis or decompression sickness, which are related to nitrogen absorption under pressure rather than the effects of elevated oxygen levels. Therefore, identifying shortness of breath as a symptom of CNS oxygen toxicity is inaccurate, as it does not align with the recognized symptoms of this condition.