Preoxygenation in healthy volunteers: A graph of oxygen "washin" using end-tidal oxygraphy
End-tidal oxygen fractions (FE′O2) have been measured in 40 healthy volunteers breathing 100% oxygen. On the assumption that FE′O2 is a good measure of alveolar oxygen, we have drawn a graph of oxygen washin vs time. Clinical applications are discussed. (Br. J. Anaesth. 1994; 72: 116-118) © 1994 British Journal of Anaesthesia.