A
ATA
Full name: Atmospheres Absolute
A unit of pressure used in hyperbaric medicine. 1 ATA equals normal atmospheric pressure at sea level (14.7 psi, 760 mmHg). Clinical HBOT typically uses 2.0–2.4 ATA; emergency indications use 2.8–3.0 ATA; mild "soft-shell" HBOT uses 1.3 ATA.
About ATA
This HBOT Hub glossary entry covers Atmospheres Absolute as a term used in hyperbaric oxygen therapy — its definition, clinical significance, and relevance across treatment protocols, chamber types, and research applications. Browse the full HBOT A–Z glossary for related terminology, or see our research library for context on how this concept appears in the HBOT literature.
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- Research library — peer-reviewed evidence base organised by evidence tier.
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