GAS (redirected from gas edema disease)

gas (gas) any elastic aeriform fluid in which the molecules are separated from one another and so have free paths.gas´eous

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alveolar gas  the gas in the alveoli of the lungs, where gaseous exchange with the capillary blood takes place.

blood gases  the partial pressures of oxygen and carbon dioxide in blood; see under analysis.

coal gas  a gas, poisonous because it contains carbon monoxide, produced by destructive distillation of coal; much used for domestic cooking.

laughing gas  nitrous oxide.

tear gas  one which produces severe lacrimation by irritating the conjunctivae.

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gas (gs)

n. pl. gas·es or gas·ses

1. The state of matter distinguished from the solid and liquid states by relatively low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, the ability to diffuse readily, and the spontaneous tendency to become distributed uniformly throughout any container.

2. A substance in the gaseous state.

3. A gaseous fuel, such as natural gas.

4. Gasoline.

5. A gaseous asphyxiant, an irritant, or a poison.

6. A gaseous anesthetic, such as nitrous oxide.

7. Flatulence.

8. Flatus.

v.

1. To treat chemically with gas.

2. To overcome, disable, or kill with poisonous fumes.

3. To give off gas.

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GAS,

n.pr See syndrome, general adaptation.

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GAS,

n See syndrome, general adaptation.

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gas,

n a fluid with no definite volume or shape whose molecules are practically unrestricted by cohesive forces.

gas, laughing,

n See nitrous oxide.

gas, noble,

n a gas that will not oxidize; the inert gases (e.g., helium and neon).

gas, olefiant,

n a machine that uses ethylene oxide gas to sterilize objects that cannot withstand high temperatures, such as soft plastic and cloth.

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gas

any elastic aeriform fluid in which the molecules are widely separated from each other and so have free paths.

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alveolar gas

the gas in the alveoli of the lungs, where gaseous exchange with the capillary blood takes place. See also oxygen, carbon dioxide.

blood gas

see blood gas analysis.

gas bubble disease

a disease of fish in tanks in which the water is supersaturated with oxygen or nitrogen. Gas embolism develops in the gills. Air bubbles can be seen in the gills, eyes and under the skin and the fish show bizarre nervous behavior.

gas cap

a cap of gas above fluid or solid contents in a hollow viscus, e.g. in a static rumen. Seen radiologically in distended intestinal loops in paralytical ileus.

gas edema disease

see blue wing disease.

gas exchange

gases move by simple diffusion in response to pressure differences; net diffusion occurs from areas of high pressure to areas of lower pressure irrespective of whether the gas is present as a gas or in solution or gases moving from gas to solution or vice versa. The rate of exchange of gases in body tissues, e.g. between alveolar space and erythrocyte, is influenced by many other factors, especially the diffusion distance and the solubility of the gas.

gas inhalation

irritant gases, e.g. manure gas, cause pulmonary edema.

laughing gas

nitrous oxide.

manure gas poisoning

see manure pit gas poisoning.

tear gas

a gas that produces severe lacrimation by irritating the conjunctivae. See lacrimator.

gas transport

relates to the efficiency of transport of gas, e.g. oxygen, by the patient as a whole. The efficiency of gas transport varies widely between normal individuals and between species, e.g. athletic breeds of horses and dogs have much faster gas transport systems than human athletes; the efficiency of gas transport in the individual depends largely on the rapidity of increase in minute ventilation, plus a similar rate of increase in cardiac output.

gas tube

see crookes' tube.

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gas A volatilized liquid. See Biogas, Compressed gas, Flammable gas, Greenhouse gas, Mustard, Natural gas, Oxidant gas, Phosgene gas Occupational medicine A gas phase contaminant. See Inhalant.