Which type of oxygen toxicity poses greater concern for divers?

Central Nervous System Oxygen Toxicity is particularly concerning for divers due to its potential to cause serious and immediate neurological effects. This type of toxicity can occur when divers breathe high partial pressures of oxygen, which can happen during deep dives or when using a gas mixture with a high percentage of oxygen, such as Nitrox.

The symptoms can manifest quickly, often referred to as "oxygen seizures," which can be life-threatening if they occur during a dive. The risk is heightened because the onset of symptoms can be sudden and lead to loss of motor control, confusion, or unconsciousness. This can impair a diver's ability to manage their ascent or respond to emergencies.

In contrast, while Pulmonary Oxygen Toxicity and Chronic Oxygen Toxicity are relevant concerns, they typically develop over a longer exposure duration or through repeated exposures rather than presenting acute dangers during a dive. Acute Oxygen Toxicity is generally linked to immediate high pressure but is encompassed within the risks associated with Central Nervous System Oxygen Toxicity. Understanding the specific threats each type of toxicity presents is crucial for safety in diving environments.