hibernation (redirected from hibernations)

hibernation /hi·ber·na·tion/ (hi″ber-na´shun)

1. the dormant state in which certain animals pass the winter, marked by narcosis and by sharp reduction in body temperature and metabolism.

2. an analogous temporary reduction in function, such as of an organ.

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artificial hibernation  a state of reduced metabolism, muscle relaxation, and a twilight sleep resembling narcosis, produced by controlled inhibition of the sympathetic nervous system and causing attenuation of the homeostatic reactions of the organism.

myocardial hibernation  chronic but potentially reversible cardiac dysfunction caused by chronic myocardial ischemia, persisting at least until blood flow is restored.

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hibernation

[hī′bərnā′shun]

Etymology: L, hibernare, to winter

a natural physiologic state or process wherein a generalized slowdown in metabolic and body functions produces a somnolescent condition and in which body temperature is maintained at a lower level than normal. It is a survival mechanism used by some species of birds and mammals to cope with periods of low temperature and reduced food supply.

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Hibernation

Cardiology Myocardial hibernation
Physiology Astate of winter dormancy and hypothermia seen in bears and other animals

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hibernation [hi″ber-na´shun]

a dormant state in which certain animals pass the winter, marked by deep sleep and sharp reduction in body temperature and metabolism.

artificial hibernation a state of reduced metabolism, muscle relaxation, and a twilight sleep resembling narcosis, produced by controlled inhibition of the sympathetic nervous system and causing attenuation of the homeostatic reactions of the organism.

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hibernation

the dormant state in which certain animals pass the winter, marked by narcosis and by sharp reduction in body temperature and metabolism.

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artificial hibernation

a state of reduced metabolism, muscle relaxation, and a twilight sleep resembling narcosis, produced by controlled inhibition of the sympathetic nervous system and causing attenuation of the homeostatic reactions of the organism. Induced hypothermia has had experimental use as an anesthetic medium for extensive surgical operations in humans.