carbon dioxide content
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an odorless, colorless gas, CO2, resulting from oxidation of carbon, formed in the tissues and eliminated by the lungs; used in some pump oxygenators to maintain the carbon dioxide tension in the blood. It is also used in solid form; see carbon dioxide snow and carbon dioxide slush.
carbon dioxide combining power the ability of blood plasma to combine with carbon dioxide; indicative of the alkali reserve and a measure of the acid-base balance of the blood.
carbon dioxide content the amount of carbonic acid and bicarbonate in the blood; reported in millimoles per liter.
carbon dioxide–oxygen therapy administration of a mixture of carbon dioxide and oxygen (commonly 5 per cent CO2 and 95 per cent O2 or 10 per cent CO2 and 90 per cent O2); used for improvement of cerebral blood flow, stimulation of deep breathing, or treatment of singultation (hiccupping). Carbon dioxide acts by stimulating the respiratory center; it also increases heart rate and blood pressure. Therapy is given for 6 minutes or less with a 5 per cent mixture and 2 minutes or less with a 10 per cent mixture. Potential adverse effects include headache, dizziness, dyspnea, nausea, tachycardia and high blood pressure, blurred vision, mental depression, coma, and convulsions.
carbon dioxide slush solid carbon dioxide combined with a solvent such as acetone, and sometimes also alcohol; used as an escharotic to treat skin lesions such as warts and moles and as a peeling agent in chemabrasion.
car·bon di·ox·ide con·tent
the total carbon dioxide available from serum or plasma following addition of acid; measured routinely in hospital laboratories as a component of electrolyte profiles.
carbon dioxide contentCO2 content Arterial blood gases A measure of the relative blood concentration of CO2, measured using pH electrodes, by enzymes, or based on changes in pH Ref range < age 2–18-28 mmol/L; > 2 yrs–venous 22-26 mmol/L; > 2 yrs–arterial 22-32 mmol/L ↓ in Respiratory alkalosis–DKA, lactic acidosis, alcoholic ketoacidosis, hyperventilation, metabolic acidosis, kidney disease, renal failure, diarrhea, Addison's disease, ethylene glycol poisoning, methanol poisoning ↑ in Severe vomiting, gastric drainage, hypoventilation–eg, emphysema or pneumonia, hyperaldosteronism, Cushing syndrome. See Arterial blood gases.
an odorless, colorless gas, CO2, resulting from oxidation of carbons, formed in the tissues and eliminated by the lungs; used with oxygen to stimulate respiration and in solid form (carbon dioxide snow—see below) as an escharotic, as a gas to euthanize laboratory rabbits and rodents.
carbon dioxide anesthesia
exposure of pigs for 45 seconds in a mixture of 60 to 70% CO2 in air is an adequate pre-slaughter anesthetic for pigs.
carbon dioxide combining power
the ability of blood plasma to combine with carbon dioxide; indicative of the alkali reserve and a measure of the acid-base balance of the blood.
carbon dioxide content
the amount of carbonic acid and bicarbonate in the blood; reported in millimoles per liter.
carbon dioxide dissociation curve
a graph demonstrating the relationship between the blood content of CO2 and the Pco2.
carbon dioxide narcosis
carbon dioxide snow
solid carbon dioxide, formed by rapid evaporation of liquid carbon dioxide; it gives a temperature of about −110°F (−79°C), and is used as an escharotic in various skin diseases. Called also dry ice.
carbon dioxide tension
carbon dioxide transport
carbon dioxide passes from tissues to blood by diffusion, in the blood by solution and via reactions within plasma and erythrocytes, from blood to pulmonary alveoli by diffusion.