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hyperventilation
- Definição1
- Occurs when an individual is experiencing emotional stress, fright, or pain, and the breathing rate and depth increase, although the carbon dioxide level in the blood is already at a reduced level. The result is an excessive loss of carbon dioxide from the body, which can lead to unconsciousness due to the respiratory system’s overriding mechanism to regain control of breathing.
- Fonte1
- FEDERAL AVIATION ADMINISTRATION. Aircraft flying handbook. Washington, 2004. Disponível em: http://www.faa.gov/library/manuals/aircraft/media/FAA-H-8083-5.pdf. Acesso em: 09 maio 2012.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of civil aviation medicine. 3rd ed. Montreal, 2012. (Doc. 8984 AN/895).
- Contexto
- Sympathetic depressants (sympatholytics) tend to be less predictable than those agents noted above but in general may be expected to produce postural hypotension, bradycardia, sedation, weakness and mental confusion. In some cases one might observe tachycardia and hyperventilation, seemingly effects of sympathetic stimulation rather than depression. Examples of this class of pharmaca are methyldopa, guanethidine, ganglionic blockers (hexamethonium, pentolinium), the rauwolfia group, and dihydroergotamine alkaloids.
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