Hyperbaric-Hypobaric Interactions as They Relate to Compressed Air Diving and Aviation: Canine Experiment.
NAVAL AEROSPACE MEDICAL RESEARCH LAB PENSACOLA FL
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To confirm or refute the existing regulation requiring a 24 hour interval between diving and flying, dogs were exposed to increased ambient pressures equivalent to water depths encountered in normal professional and recreational diving. The animals were subsequently exposed to reduced pressures comparable to those experienced by naval aircrew members. Various times between hyperbaric and hypobaric epixodes were evaluated. The experimental animals were examined using the following methods Clinical signs clinico-pathologic determinations pulmonary interstitial fluid volume gross pathology and light microscopy. Evidence of decompression sickness was found. Insofar as the findings may apply to man, a period greater than 12 hours should elapse between diving and flying. An experimental animal species more closely related to man is being examined in larger numbers to precisely define the safe interval.
- Stress Physiology