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Representative tidal, areaial and maximal flow–volume curves at baseline in a subject with low forced expiratory volume in step one s (FEV1)/vital capacity ratio and normal FEV1. ——: 40% forced vital capacity indicating the point where instantaneous maximal and partial expiratory flows were measured.
An SBN2). After at least four regular breaths, the subjects were asked to fully expire to RV and then to take an IVC of 100% oxygen. This was followed, without breath-hold, by a full expiration to RV at a rate of 0.30–0.50 L·s ?1 . Expiratory nitrogen concentration was plotted against VC and the slope of nitrogen alveolar plateau (phase III) calculated by drawing the best-fit line. Continue reading “W-O try twenty five try did that with a Vmaximum22D (VIASYS-SensorMedics Inc”