Heart rate response of anesthetized and unanesthetized dogs to noise and near-vacuum decomposition

Author / Creator

Cooke, Julian P

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Physical

Summary

Animal studies indicate that a sudden intense noise, as might accompany an unscheduled loss of cabin pressure, will act as stress sufficient to elicit significant cardiac rate increase in conscious...

Animal studies indicate that a sudden intense noise, as might accompany an unscheduled loss of cabin pressure, will act as stress sufficient to elicit significant cardiac rate increase in conscious dogs as compared to a lack of an increase in anesthetized animals. Conversely, the heart rates of some anesthetized animals, upon noise exposures, are shown to increase immediately following the cessation of noise before decompression but not post-decompression, thus, possibly, indicating neurologic factors are involved.

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