Pulmonary Effects of U.S. Navy Treatment Table 6 Hyperbaric Exposure

Abstract

Eighteen healthy subjects underwent pulmonary function measurements after single experimental Treatment Table 6 (TT6) recompression exposures in which oxygen was delivered from MK 26 rebreather underwater breathing apparatus. Most subjects showed no pulmonary function changes, but three had mildly decreased flow-volume parameters on surfacing and one developed changes later, for a 22% incidence (95% binomial confidence interval 6 to 48%). All changes resolved spontaneously over the next several days. This incidence of decreased pulmonary function after rebreather TT6 may underestimate slightly the incidence after conventional oxygen delivery, because inspired oxygen fraction is lower and gas is more humid with the MK 25 than with conventional systems. Nonetheless, the pulmonary insult from a TT6 is minor in comparison to the benefit to be gained if recompression therapy is indicated.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2008
Accession Number
ADA493362

Entities

People

  • Barbara E. Shykoff

Organizations

  • United States Navy Experimental Diving Unit

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Binomials
  • Breathing Apparatus
  • Carbon Monoxide
  • Classification
  • Dielectric Gases
  • Diving
  • Gases
  • Instrumentation
  • Manuals
  • Measurement
  • Naval Operations
  • Navy
  • Pulmonary Function
  • Respiration
  • Toxicity
  • Underwater Breathing Apparatus

Readers

  • Immunology and Pathology
  • Materials Science
  • Regression Analysis.