TY - JOUR T1 - Variability of the single-breath carbon monoxide transfer factor as a function of inspired oxygen pressure JF - European Respiratory Journal JO - Eur Respir J SP - 573 LP - 574 DO - 10.1183/09031936.93.01060573 VL - 1 IS - 6 AU - RO Crapo AU - RE Kanner AU - RL Jensen AU - CG Elliott Y1 - 1988/06/01 UR - http://erj.ersjournals.com/content/1/6/573.abstract N2 - We measured single-breath CO transfer factor (TLCO) and alveolar oxygen partial pressure (PAO2) six times at each of three fractions of inspired oxygen (FIO2) (0.17, 0.21, 0.26) in twelve healthy subjects, to determine whether one FIO2 would have the advantage of producing less variable TLCO results than the others. Measured TLCO was adjusted for the increase in carboxyhaemoglobin during the tests. We found no significant differences in intra- or interindividual variance as a function of test FIO2. ER -