Ascent rate, post-dive exercise, and decompression sickness in the rat.

Published

Journal Article

The effects of ascent rate and post-dive exercise on the incidence of decompression sickness (DCS) were investigated in six groups of 20 rats exposed for 2 h at a pressure equivalent to 240 feet of sea water (fsw; 735 kPa). Ascent rates were 30, 45, and 60 fsw/min (92, 138, 184 kPa/min), and the rats either rested after the exposure or exercised by walking for 30 min on a treadmill at 1.6 m/min. Post-dive signs included respiratory distress, difficulty walking, paralysis, and death. DCS was scored as non-fatal at 30-min post-dive or fatal at any time. Analysis by ordinal logistic regression indicated more DCS with post-dive exercise (P = 0.0112) and at 45 (P = 0.0011) and 60 fsw/min (P = 0.0001) compared to 30 fsw/min. Survival analysis suggested earlier death at 60 fsw/min compared to 30 fsw/min (P = 0.0006). Similar effects have been reported for the less severe DCS that occurs in humans.

Full Text

Duke Authors

Cited Authors

  • Pollard, GW; Marsh, PL; Fife, CE; Smith, LR; Vann, RD

Published Date

  • December 1995

Published In

Volume / Issue

  • 22 / 4

Start / End Page

  • 367 - 376

PubMed ID

  • 8574124

Pubmed Central ID

  • 8574124

International Standard Serial Number (ISSN)

  • 1066-2936

Language

  • eng

Conference Location

  • United States