Hydrogen narcosis

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Hydrogen narcosis is a neurological and physiological condition that occurs when a diver is exposed to high pressures of hydrogen gas. It is also known as the hydrogen effect or high-pressure nervous syndrome (HPNS).

Overview[edit | edit source]

Hydrogen narcosis is a form of inert gas narcosis, similar to nitrogen narcosis, and can occur when diving at depths greater than 150 meters (500 feet). The condition is caused by the increased partial pressure of hydrogen in the body, which affects the nervous system and can cause symptoms such as dizziness, confusion, euphoria, and impaired motor function.

Causes[edit | edit source]

The primary cause of hydrogen narcosis is the exposure to high pressures of hydrogen gas, typically experienced during deep-sea diving. The pressure of the gas increases with depth, and at extreme depths, the high pressure can cause the hydrogen molecules to have a narcotic effect on the brain.

Symptoms[edit | edit source]

The symptoms of hydrogen narcosis can vary depending on the depth and duration of the dive, as well as individual susceptibility. Common symptoms include dizziness, confusion, euphoria, and impaired motor function. In severe cases, unconsciousness or death can occur.

Prevention and Treatment[edit | edit source]

Prevention of hydrogen narcosis primarily involves limiting the depth and duration of dives, as well as using a helium-based breathing gas instead of hydrogen. Treatment typically involves ascending to a shallower depth to reduce the pressure of the gas, and in severe cases, emergency ascent and medical treatment may be necessary.

See Also[edit | edit source]

Resources[edit source]

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Contributors: Prab R. Tumpati, MD