V d Bohr and V d BE increase with increasing physiological dead-space. Dashed straight line in b is the line of identity.įigure 2 b shows calculated dead-space to tidal volume ratios as functions of true physiological dead-space to tidal volume ratio. V d Fowler is anatomical dead-space calculated by Fowler's graphic method. V d k is dead-space calculated by Koulouris' method (Appendix A). V d et: dead-space calculated by using Equation 4. V d Bohr is Bohr dead-space calculated by using Equation 1.
V d BE is Bohr–Enghoff dead-space calculated by using Appendix Equation 2. \(P\mathrm\) is alveolar P co 2 calculated by Koulouris' method (Appendix A).
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