Noninvasive cardiac output measurements are inaccurate in patients with severe aortic valve stenosis undergoing transcatheter aortic valve implantation

Figures

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  Fig. 1.. (A) Bland-Altman plot (112 paired data points) between the pulmonary artery catheter thermodilution cardiac output (CO) and the noninvasive finger cuff pulse contour CO. The Bland-Altman plot shows the mean bias (right line) and LOA (dashed lines). (B) Bland-Altman plot (59 paired data points, SVRI < 1,200 dyne s/cm5/m2) between pulmonary artery catheter thermodilution cardiac output (CO) and noninvasive finger cuff pulse contour CO. The Bland-Altman plot shows the mean bias (right line) and LOA (dashed lines). (C) Bland-Altman plot (51 paired data points, 1,200 dyne s/cm5/m2 ≤ SVRI < 2,500 dyne s/cm5/m2) between pulmonary artery catheter thermodilution cardiac output (CO) and noninvasive finger cuff pulse contour CO. The Bland-Altman plot shows the mean bias (right line) and LOA (dashed lines). CO: cardiac output, SD: standard deviation, COClearSight: cardiac output measured with ClearSight, COTD: cardiac output measured with pulmonary artery catheter thermodilution, SVRI: systemic vascular resistance index.

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  Fig. 2.. Correlation between systemic vascular resistance index (SVRI) and bias in cardiac output (CO). COClearSight: cardiac output measured with ClearSight, COTD: cardiac output measured with pulmonary artery catheter thermodilution, SVRI: systemic vascular resistance index.

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  Fig. 3.. Correlation between COTD and percent difference ([COTD − COClearSight] / COTD). COClearSight: cardiac output measured with ClearSight, COTD: cardiac output measured with pulmonary artery catheter thermodilution.

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  Fig. 4.. Polar plots used to examine the trending ability for change in cardiac output (CO) measured using ClearSight compared with the change in CO measured by thermodilution using a pulmonary arterial catheter before and after artificial valve deployment. The shaded gray area is the exclusion zone that was set as the percentage change in CO < 5%. ΔCO, percent change in cardiac output.