| ATA | atmosphere absolute |
| ATP | adenosine-triphosphate |
| CNS | central nervous system |
| CO | carbon monoxide |
| CO2 | carbon dioxide |
| ECHM | European Committee of Hyperbaric Medicine |
| HBOT | hyperbaric oxygen therapy |
| NO | nitric oxide |
| SSNHL | sudden sensorineural hearing loss |
| UHMS | Undersea and Hyperbaric Medical Society |
| WHO | World Health Organization |
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