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Updated: Mar 11, 2026
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A Model to Simulate Clinically Relevant Hypoxia in Humans
Published on: December 22, 2016
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Theoretical considerations on the ultimate depth that could be reached by saturation human divers
Jacques H Abraini1, Hélène N David2, Nicolas Vallée3
1Université de Caen Normandie, Faculté de Médecine, Caen, France; Département d'Anesthésiologie, Université Laval, Québec, QC, Canada; Institut de Recherche Biomédicale des Armées (IRBA), Equipe Résidente de Recherche Subaquatique Opérationnelle (ERRSO), Toulon, France.
Medical Gas Research
|November 22, 2016
Summary
Deep sea divers may reach 1,000 meters using saturation diving. This research explores the ultimate depth limits, considering narcosis and psychotic symptoms during experimental deep diving programs.
Area of Science:
- Physiology
- Marine Biology
- Oceanography
Background:
- High-pressure neurological syndrome and narcosis limit deep diving.
- Experimental deep diving programs face challenges with gas mixtures and psychotic symptoms.
Purpose of the Study:
- To determine the ultimate depth achievable in saturation human diving.
- To analyze limitations imposed by inert gas narcosis and associated symptoms.
Main Methods:
- Review of previous deep diving data.
- Application of the critical volume model for inert gas narcosis.
- Analysis of symptoms observed in experimental deep diving programs.
Main Results:
- Paroxysmal narcotic episodes and psychotic-like symptoms are major limitations.
- The critical volume model suggests a potential ultimate depth.
Conclusions:
- The ultimate depth for saturation diving is proposed to be approximately 1,000 meters.
- Further research is needed to understand and mitigate narcosis effects for extreme deep diving.
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