Which type of oxygen toxicity is characterized by convulsions?

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CNS oxygen toxicity is characterized by the occurrence of convulsions, particularly in the context of hyperbaric conditions, such as those experienced during deep diving. This type of oxygen toxicity arises when the partial pressure of oxygen is significantly increased, which can lead to adverse effects on the central nervous system. The mechanisms behind CNS oxygen toxicity involve the production of reactive oxygen species that can affect neuronal function, potentially leading to symptoms such as visual disturbances, muscle twitching, and, eventually, seizures or convulsions.

In diving scenarios, this toxicity can occur when divers breathe oxygen at high pressures, typically in excess of 1.6 ATA (atmospheres absolute), making awareness of the symptoms and prevention crucial for safety. Understanding this phenomenon is essential for divers and dive instructors to manage risks associated with diving deeper than 30 meters, where these symptoms may more commonly manifest. Knowledge about CNS oxygen toxicity helps in recognizing and mitigating the risks of high-pressure oxygen environments.

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