The Impact of the Inhaled Concentration of an Anesthetic on the Rate at Which the Alveolar Concentration Increases Toward the Inspired (Fe/Fi) is Known As the Concentration Effect

(From Eger EI. Effect of inspired anesthetic concentration on the rate of rise of alveolar concentration. Anesthesiology. 1963;24:153-157, with permission.)

The impact of the inhaled concentration of an anesthetic on the rate at which the alveolar concentration increases toward the inspired (FE/FI) is known as the concentration effect.