Figure 1.

Comparison of effects of shunt (top) and ventilation/perfusion ratio (<a onClick="popup('http://ccforum.com/content/12/3/148/mathml/M1','MathML',630,470);return false;" target="_blank" href="http://ccforum.com/content/12/3/148/mathml/M1">View MathML</a>) inequality (bottom) on calculated physiological dead space. In general, <a onClick="popup('http://ccforum.com/content/12/3/148/mathml/M1','MathML',630,470);return false;" target="_blank" href="http://ccforum.com/content/12/3/148/mathml/M1">View MathML</a> inequality leads to greater dead space than shunt does. Log SDQ, second moment (dispersion) of the ventilation/perfusion distribution on a log scale.

Wagner Critical Care 2008 12:148   doi:10.1186/cc6888
Download authors' original image