A NEW METHOD FOR CONTINUOUS MEASUREMENT OF FLUX OF GASES IN THE LUNGS DURING BREATHING

摘要

A method of calculating the flux of any gas(x) in a CBC circuit for a ventilated or a spontaneous breathing subject, for example said gas(x) being; a) an anesthetic such as but limited to; i) N20; ii) sevoflurane; iii) isoflurane; iv) halothane; v) desflurame; or the like b) Oxygen; c) Carbon dioxide; or the like utilizing the following relationships;: Flux of gas(x) = SGF (Fsx - FEx) wherein SGF = Source of gas flow into the breathing circuit (CBC circuit) in liters/minute as read from the gas flow meter as set by the anesthesiologist; Fsx = Fractional concentration of gas X in the source gas (which is set by the anesthesiologist); FEx = Fractional concentration of gas X in the end expired gas as determined by a portable gas analyzer, or the like.