Accession Number:

ADA180646

Title:

Human Decompression Trial in Nitrogen-Oxygen Diving.

Descriptive Note:

Interim rept. Jan 83-Aug 86,

Corporate Author:

NAVAL MEDICAL RESEARCH INST BETHESDA MD

Report Date:

1986-09-26

Pagination or Media Count:

47.0

Abstract:

A trial was performed to assess the relative risks of oxygen and nitrogen in human no-decompression dives. Dives n477 were performed with subjects breathing mixtures with low or high oxygen partial pressures. Dives were 30, 60, or 240 min in duration to various depths chosen by a sequential dose-response format. Despite exceeding the currently accepted safe limite by more than 20, the incidence of demonstrable DCS was under 3. Another 3 had ambiguous symptoms. An increase in DCS risk with higher N2 pressure could not be strongly demonstrated. Oxygen had less than half of the DCS risk associated with nitrogen. Keywords decompression sickness diving mathematical modeling human trial sequential trial.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE