What are the two primary types of oxygen toxicity?

The two primary types of oxygen toxicity are indeed central nervous system toxicity and pulmonary toxicity. Central nervous system (CNS) toxicity occurs when high partial pressures of oxygen are breathed, leading to symptoms such as visual and auditory disturbances, muscle twitching, seizures, and other neurological effects. This type of toxicity is particularly relevant to divers using enriched air at greater depths where the pressure increases.

Pulmonary toxicity results from prolonged exposure to high concentrations of oxygen, which can irritate the lungs and lead to symptoms like coughing and difficulty breathing. Understanding these two forms of oxygen toxicity is crucial for divers using nitrox mixtures, as they must manage the risks associated with oxygen exposure during dives.