Hypercapnia during Deep Air and Mixed Gas Diving

Abstract

Elevated carbon dioxide (CO2) levels in the blood, hypercapnia, can limit work capacity and diver safety. The risk of hypercapnia was determined in six U.S. Navy divers with underwater bicycle ergometery at 190 feet of sea water (FSW) breathing air, plus 300 and 1,000 FSW breathing helium-oxygen using a helmet (oro-nasal mask/demand regulator). Peak-to-peak mouth pressure (Delta P) and breath-to-breath end-tidal partial pressure of CO2 (PETCO2) were measured during sixth min of exercise (total work = 193 watts).

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1990
Accession Number
ADA224080

Entities

People

  • John A. Sterba

Organizations

  • United States Navy Experimental Diving Unit

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Carbon Dioxide
  • Classification
  • Data Analysis
  • Divers
  • Diving
  • Experimental Design
  • Gases
  • Hyperbaric Chambers
  • Mass Spectrometers
  • Measurement
  • Monitoring
  • Partial Pressure
  • Pressure Transducers
  • Sea Water
  • Security
  • Static Pressure
  • Stress Tests

Readers

  • Marine Mammal Biology
  • Materials Science