Mathematical Behavior of MEFV Curves in Childhood Asthma and the Role of Curvature in Quantifying Flow Obstruction

<table>Local curvature, <svg height="13.45" id="M189" style="vertical-align:-2.21957pt" version="1.1" viewbox="0 0 28.799999 13.45" width="28.799999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.45)">
<g transform="translate(72,-61.24)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜅</tspan>
<tspan style="font-size: 12.50px; " x="7.414279" y="0">(</tspan>
<tspan style="font-size: 12.50px; " x="11.577778" y="0">𝑉</tspan>
<tspan style="font-size: 12.50px; " x="18.767002" y="0">)</tspan>
</text>
</g>
</g>
</svg>, in function of expired volume <svg height="10.575" id="M190" style="vertical-align:-0.20064pt" version="1.1" viewbox="0 0 12.625 10.575" width="12.625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.575)">
<g transform="translate(72,-63.54)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑉</tspan>
</text>
</g>
</g>
</svg>. For brevity, a restricted number of patient plots from Figure <a href="../fig1/">1</a> are presented: (-) fifth row, first column; (--) second row, second column; (-·-) fourth row, second column; (··) fifth row, second column.</table>

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fig6

Figure 6

Figure 6: Mathematical Behavior of MEFV Curves in Childhood Asthma and the Role of Curvature in Quantifying Flow Obstruction 