gas

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gas

 [gas]
any elastic aeriform fluid in which the molecules are widely separated from each other and so have free paths.
alveolar gas the gas in the alveoli of the lungs, where gas exchange with the capillary blood takes place.
blood g's the partial pressures of oxygen and carbon dioxide in blood; see blood gas analysis.
laughing gas nitrous oxide.
gas pains pains caused by distention of the stomach or intestines by accumulation of air or other gases. The presence of gas is indicated by distention of the abdomen, belching, or discharge of gas through the rectum. Gas-forming foods include highly flavored vegetables such as onions, cabbage, and turnips; members of the bean family; and fruits such as melons and raw apples. Some seasonings and other chemical irritants also produce gas.
tear gas any of various irritant vapors dispensed by aerosol and causing pain and severe lacrimation in humans; some also cause irritation of exposed mucous membranes as well as vomiting. Common ones include chloroacetophenone (CN), o-chlorobenzylidenemalononitrile (see CS), and dibenz(b,f)-1,4-oxazepine (see cr); the most common of the three is CS (also known as mace).

GAS

Abbreviation for group A streptococci , under streptococcus.

gas

(gas),
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(găs)
n. pl. gases or gasses
1.
a. 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.
b. A substance in the gaseous state.
2. A gaseous asphyxiant, irritant, or poison.
3. A gaseous anesthetic, such as nitrous oxide.
4.
a. Flatulence.
b. Flatus.
v. gassed, gassing, gases or gasses
v.tr.
1. To treat chemically with gas.
2. To overcome, disable, or kill with poisonous fumes.

GALNS

A gene on chromosome 16q24.3 that encodes N-acetylgalactosamine-6-sulfatase, a lysosomal exohydrolase required for the degradation of glycosaminoglycans, keratan sulfate and chondroitin 6-sulfate.

Molecular pathology
Defects of GALNS cause Morquio A syndrome, a lysosomal storage disease.

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.

gas

(gas)
1. Fluid, like air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a substance entirely in its vapor phase at 1 atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(gas)
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

Patient discussion about gas

Q. why do i have gas and bloating my bowels are weird and my stomach is sour also. i have pain in the top of my stomach

A. There are many different things that can cause them. Do you also suffer from diarrhea? Do you have diabetes? Do you have pain that is relieved by eating or after going to the bathroom?

Among the more common causes there are IBS (http://en.wikipedia.org/wiki/Irritable_bowel_syndrome), diabetes, malabsorption (e.g. lactose intolerance http://en.wikipedia.org/wiki/Lactose_intolerance or celiac http://en.wikipedia.org/wiki/Coeliac_disease), all of these, unfortunately, can't be diagnosed over the net, so if it keeps bothering you or if you have warning sign (such as Nocturnal abdominal pain (sleep awakening), Weight loss, Blood in the stool , Severely tender abdomen , Succussion splash , Fever , Vomiting , fatty diarrhea , New onset diarrhea) you should see a doctor.

Q. I often have gases in my stomach. And it hurts. Is there specific food I should avoid? thanks

A. Why don't you try to run a log of what you eat and how did you feel after that? The digestive system of each of us is different, so it may not be possible to give you advice that would be good for you specifically. If these complaints bothers you, you may also want to consult a docotr.

www.nlm.nih.gov/medlineplus/ency/article/003124.htm

More discussions about gas
References in periodicals archive ?
Kihara, "Fundamentals of gasless single-port robosurgeon surgery," in Gasless Single-Port RoboSurgeon Surgery in Urology, pp.
Yun et al., "Functional voice and swallowing outcomes after robotic thyroidectomy by a gasless unilateral axillo-breast approach: comparison with open thyroidectomy," Surgical Endoscopy and Other Interventional Techniques, vol.
The houses, just like the other houses in Schuytgraaf, are connected to district heating and are therefore gasless. In addition, the municipality requires extra efforts from the construction companies to make the newly built homes sustainable.
Because of its relatively large size and the patient's desire, she underwent gasless single-port retroperitoneoscopic adrenalectomy using the RoboSurgeon system [1].
Abdominal x-ray showed multiple air-fluid levels and a gasless lower abdomen.
Gasless axillary approach he pointed out is excellent as regards cosmetic effects and gives natural view as open surgery.
Gasless Carriages, John Geiger, 86289 Lorane Highway.
SAN FRANCISCO -- Gasless laparoscopic-assisted vaginal hysterectomy produced fewer hemodynamic and pulmonary changes during surgery than when carbon dioxide pneumatic abdominal distension was used, Dr.
Main assignment (competence must be present with the contractor): - digging slots; - bringing cables and pipes into the ground; - interconnecting these pipes in a cold state (not under voltage, Gasless or dry); - damping the slots and pits; - digging and repairing couplings.
These included gasless laparoscopy, (3,4) use of [beta] adrenergic blockers, (5) Nitroglycerine, (6) calcium channel blockers and [alpha]-2 agonists such as Clonidine (7) and Dexmedetomidine.
The companies that will produce the revolutionary, practical, gasless autos of the future are going to be new, small, start-up businesses that will probably do it in a grass-roots manner, independent of each other, perhaps formed and commandeered by groups like the Google people.