The minimum concentration of the perimeter or the abbreviation MAC is the amount of Pharmaceutical from the anesthetic, that in 50% of patients of the response to stimulation of a painful stop.

from the term for a situation in the amount of power and be medicines, anesthesia, inhalation can be used. MAC for the first time in 1965, was introduced. Actually, MAC, the average rate of drug States. But in the articles as at least the amount of the drug is expressed. We rate MAC is a medications, anesthesia, inhalation is less than it, the medication stronger.

minimum concentration, perimeter, etc. the concentrations of anesthetic drugs inhaler (which is based on the extent of a the atmosphere be expressed) is that of moving the patient in response to stimulation of a painful result of surgery in 50% of cases helps prevent. This measure, in the mode of lasting. with the assumption that the necessary balance between the anesthetic drugs inhaled in the alveoli and the blood and the brain to come there.

MAC as a convenient method to measure the power of drugs, anesthesia, inhalation is accepted, because for different species and in different conditions remained constant.

At least the concentration of perimeter common in a person 40 years old is as follows:

Di-nitrogen monoxide - 104
xenon - 72
- 6 of 6
Di ethyl ether - 3٫2
- 1 of 8
- 1 of 63
Isoflurane - 1 of 17
halothane - 0٫75
chloroform - 0٫5
methoxy - 0. the 16