SCUBA - Self-Contained Underwater Breathing Apparatus 17
SCUBA - Self-Contained Underwater Breathing Apparatus 17 : Effects of Breathing High Pressure Gas: (2) Oxygen Toxicity: Oxygen toxicity. Oxygen toxicity occurs when oxygen in the body exceeds a safe partial pressure (PPO2). In extreme cases it affects the central nervous system and causes a seizure, which can result in the diver spitting out his regulator and drowning. While the exact limit is idiomatic, it is generally recognized that Oxygen toxicity is preventable if one never exceeds an oxygen partial pressure of 1. 4 bar. For deep divesgenerally past 180 feet (55 m), divers use "hypoxic blends" containing a lower percentage of oxygen than atmospheric air. For more information, see oxygen toxicity
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