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ALTITUDE HYPOXIA [9 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2007-12-11

English

Subject field(s)
  • Aircraft Systems
DEF

To reduce the pressure of air or gas within a container, cabin, or other enclosed space.

CONT

One consequence of cabin pressurization is that the pressure inside the airplane might be 70 kPa (10 psi), while the pressure outside is only 15 kPa (2 psi). An otherwise-harmless pinhole under these pressure differences will generate a high-pitched squeal as the air leaks out at supersonic speeds. A hole a metre and a half (5 feet) across will depressurize a jetliner in a fraction of a second.

OBS

Cabin pressurization is the active pumping of air into an aircraft cabin to increase the air pressure within the cabin. It is required when an aircraft reaches high altitudes, because the natural atmospheric pressure is too low to allow people to absorb sufficient oxygen, leading to altitude sickness and ultimately hypoxia.

PHR

Depressurize the cabin.

French

Domaine(s)
  • Circuits des aéronefs
DEF

Faire perdre la pression normale, obtenue par pressurisation, à (un avion, un véhicule spatial).

OBS

dépressuriser : terme uniformisé par les Comités d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes et Maintenance.

PHR

Dépressuriser la cabine.

Spanish

Save record 1

Record 2 2007-10-10

English

Subject field(s)
  • Scientific Research Equipment
  • Scientific Measurements and Analyses
DEF

A chamber used during aerospace or high terrestrial altitude research or training to simulate the effects of high altitude on the human body, especially hypoxia(low oxygen) and hypobaria(low ambient air pressure).

OBS

The Hypobaric Facility has been used for diagnostic assessments of medically-restricted aircrew, including doppler monitoring of CF [Canadian Forces] aircrew to assess susceptibility to altitude-induced decompression illness.

French

Domaine(s)
  • Matériel et équipement (Recherche scientifique)
  • Mesures et analyse (Sciences)
DEF

Simulateur de haute altitude utilisé pour la formation aéromédicale, la recherche, l'évaluation médicale et la mise au point d'équipement.

OBS

L'installation hypobare a été utilisée pour effectuer des évaluations diagnostiques sur le personnel navigant soumis à des restrictions d'ordre médical, y compris le contrôle par effet Doppler d'équipage des FC [Forces canadiennes] pour évaluer leur sensibilité aux malaises de décompression provoqués par l'altitude.

Spanish

Save record 2

Record 3 2007-07-23

English

Subject field(s)
  • Orbital Stations
CONT

The interior of all the research modules, like the ISS [International Space Station] interior as a whole, will be a "shirt-sleeve" environment, with an oxygen-nitrogen atmosphere and temperature and humidity conditions similar to Earth-bound laboratories.

CONT

A "shirt sleeve" environment must utilize a breathing mixture which is fire safe and provides hypoxia and DCS [Decompression Sickness] protection. Argon is an inert gas with properties similar to nitrogen. It is relatively inexpensive and available. In terms of fire protection, a 38% oxygen and 62% argon mixture at 7. 34 psia will provide an equivalent burn rate of paper strips at sea level air. In terms of hypoxia prevention, this mixture, at this pressure, is the equivalent of breathing air at an altitude of 2, 728 feet.

OBS

shirt-sleeve environment: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
OBS

milieu de travail en tenue décontractée : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 3

Record 4 2006-01-17

English

Subject field(s)
  • Symptoms (Medicine)
DEF

A type of high altitude [sickness] caused by exposure to altitude high enough to cause hypoxia, occurring as a result of decreased atmospheric pressure with consequent lowering of arterial oxygen content.

CONT

Mountain sickness is an illness that ranges from a mild headache and weariness to a life-threatening build-up of fluid in the lungs or brain at high altitudes. Acute mountain sickness (AMS) is the mildest and most common form.

OBS

It occurs as acute, subacute, and chronic forms. The subacute and chronic forms can be cured by descent to a lower altitude. Called also mountain disease.

French

Domaine(s)
  • Symptômes (Médecine)
CONT

Le mal des montagnes se manifeste quelques heures après l'arrivée en altitude. Les symptômes sont souvent limités à des maux de tête, des nausées, des vomissements, des bourdonnements d'oreilles, des palpitations, des vertiges et une lassitude. La nuit, des insomnies peuvent survenir.

OBS

soroche (sorroche) : Ce terme prête à confusion puisqu'il peut désigner aussi bien le mal des montagnes que le mal de l'altitude.

Key term(s)
  • mal de montagne

Spanish

Save record 4

Record 5 2003-12-08

English

Subject field(s)
  • Orbital Stations
CONT

The Pressurized Module (PM) is a facility where astronauts conduct experiments or control the total JEM [Japanese Experiment Module] facility. Inside the PM, the air composition and pressure are kept the same as on Earth, and temperature and humidity are controlled so as to be comfortable for astronauts’ activity all the time. Therefore, astronauts can work in the PM in a shirt-sleeve environment as we do on the ground.

OBS

In a "shirt sleeve" environment one must utilize a breathing mixture which is fire safe and provides hypoxia and DCS [Decompression Sickness] protection. Argon is an inert gas with properties similar to nitrogen. It is relatively inexpensive and available. In terms of fire protection, a 38% oxygen and 62% argon mixture at 7. 34 psia will provide an equivalent burn rate of paper strips as sea level air. In terms of hypoxia prevention, this mixture, at this pressure, is the equivalent of breathing air at an altitude of 2, 728 feet.

OBS

in shirt-sleeve environment: term officially approved by the International Space Station official approval Group (ISSOAG).

PHR

Work in a shirt-sleeve environment.

French

Domaine(s)
  • Stations orbitales
OBS

en tenue décontractée : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 5

Record 6 1981-07-27

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

A condition in which the partial pressure of oxygen in the pulmonary alveoli, blood and tissues is reduced as a result of exposure to low atmospheric pressure.

French

Domaine(s)
  • Pilotage et navigation aérienne
DEF

État dans lequel la pression partielle d'oxygène dans les alvéoles pulmonaires, le sang et les tissus est abaissée à la suite d'une exposition à une pression atmosphérique basse.

Spanish

Save record 6

Record 7 1981-07-27

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

A condition of altered pH of blood and tissue fluids in the direction of alkalinity, produced by hypoxia at real or simulated altitude. The increase of pulmonary ventilation induced by the hypoxia depletes the carbon dioxide stores of the blood and tissues, leading to alkalosis.

French

Domaine(s)
  • Pilotage et navigation aérienne
DEF

État où le pH du sang et des liquides tissulaires est modifié dans le sens de l'alcalinité, à la suite de l'hypoxie survenant en altitude réelle ou simulée. L'augmentation de la ventilation pulmonaire provoquée par l'hypoxie diminue les réserves d'anhydride carbonique du sang et des tissus, ce qui conduit à l'alcalose.

Spanish

Save record 7

Record 8 1981-07-27

English

Subject field(s)
  • Aircraft Piloting and Navigation
  • Astronautics
DEF

A term used to describe a wide range of conditions which may arise as a consequence of exposure to altitude, actual or simulated, with correction of hypoxia. The syndrome or syndromes are characterised by neurological deficit and/or circulatory decompensation. This form of Decompression Sickness may arise during altitude exposure or after descent and is occasionally irreversible, culminating in death.

French

Domaine(s)
  • Pilotage et navigation aérienne
  • Astronautique
DEF

Terminologie utilisée pour décrire une grande variété d'états qui peuvent être la conséquence d'une exposition à l'altitude réelle ou simulée, avec correction de l'hypoxie. Le syndrome ou les syndromes sont caractérisés, par des déficiences neurologiques et/ou des défaillances circulatoires. Cette forme de mal de décompression peut se produire chez un sujet exposé à l'altitude ou après la descente; elle est parfois irréversible, se terminant par la mort.

Spanish

Save record 8

Record 9 1981-07-27

English

Subject field(s)
  • Aircraft Piloting and Navigation
OBS

Loosely used as synonymous with the preferable altitude hypoxia.

French

Domaine(s)
  • Pilotage et navigation aérienne
OBS

Terminologie improprement utilisée comme synonyme d'hypoxie de l'altitude dont l'emploi est préférable.

Spanish

Save record 9

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