| nitrogen narcosis | Narcosis produced by nitrogenous materials such as occurs in certain forms of uraemia and hepatic coma, the stuporous condition characterised by disorientation and by loss of judgment and skill, attributed to an increased partial pressure of nitrogen in the inspired air of deepsea divers during underwater operations. Commonly referred to as "rapture of the deep." (05 Mar 2000) |
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| adsorption theory of narcosis | That a drug becomes concentrated at the surface of the cell as a result of adsorption, and thus alters permeability and metabolism. (05 Mar 2000) |
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| permeability theory of narcosis | That the permeability of the cell membrane is decreased by narcotic concentrations of aliphatic and other central nervous system depressants. (05 Mar 2000) |
| Meyer-Overton theory of narcosis | That narcotic efficiency parallels the coefficient of partition between oil and water, and that lipoids in the cell and on the cell membrane absorb the drug because of this affinity. Synonym: Meyer-Overton theory of narcosis. (05 Mar 2000) |
| CO2 narcosis | Coma seen with advanced lung failure and resultant hypoventilation. Synonym: CO2 narcosis, hypoxic-hypercarbic encephalopathy, pulmonary encephalopathy. (05 Mar 2000) |
| colloid theory of narcosis | That coagulation or flocculation of protein causes dehydration and reduction of metabolism. (05 Mar 2000) |
| narcosis | <medicine> Privation of sense or consciousness, due to a narcotic. Origin: NL, fr. Gr. Narkwsis. See Narcotic. Source: Websters Dictionary (01 Mar 1998) |
| surface tension theory of narcosis | That substances which lower the surface tension of water pass more readily into the cell and cause narcosis by decreasing metabolism. (05 Mar 2000) |
| inert gas narcosis | Progressive mental disturbances and unconsciousness due to breathing mixtures of oxygen and inert gases (argon, helium, xenon, krypton, and atmospheric nitrogen) at high pressure. (12 Dec 1998) |
| intravenous narcosis | Administration of opiate medication intravenously. (05 Mar 2000) |
| oxygen deprivation theory of narcosis | That narcotics inhibit oxidation, which causes the cell to be narcotised. (05 Mar 2000) |
| thermodynamic theory of narcosis | That the interposition of narcotic molecules in nonaqueous cellular phase causes changes that interfere with facilitation of ionic exchange. (05 Mar 2000) |
| enzyme inhibition theory of narcosis | That narcotics inhibit respiratory enzymes by suppression of the formation of high energy phosphate bonds within the cell. (05 Mar 2000) |
| lipoid theory of narcosis | That narcotic efficiency parallels the coefficient of partition between oil and water, and that lipoids in the cell and on the cell membrane absorb the drug because of this affinity. Synonym: Meyer-Overton theory of narcosis. (05 Mar 2000) |
| blood urea nitrogen | Blood urea nitrogen (BUN) is a metabolic by product (in the liver) from the breakdown of blood, muscle and protein. Blood urea nitrogen can be measured from a simple venipuncture specimen. Abnormal elevation in the blood urea nitrogen can indicate renal disease, dehydration, congestive heart failure, gastrointestinal bleeding, starvation, shock or urinary tract obstruction (by tumour or prostate gland). Low BUN level can indicate liver disease, malnutrition or a low protein diet. Normal BUN levels should be between 7 and 20 mg/dl (milligrams per decilitre). (27 Sep 1997) |
| carbon-nitrogen ligases | <enzyme> Enzymes that catalyze the joining of two molecules by the formation of a carbon-nitrogen bond. Registry number: EC 6.3 (12 Dec 1998) |