Analysis of a multicenter registry on evaluation of transit-time flow in coronary artery disease surgery

Figures

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  Inadequate (≤15 mL/minute) flow on LAD graft is a risk factor for the primary end point.

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  Figure 1. Graphical abstract. LITA, Left internal thoracic artery; LAD, left descending artery; ACI, acoustic coupling index; PI, pulsatility index; DF, diastollic filling; TTFM, transit-time flow measurement; MACE, major adverse cardiac event; CABG, coronary artery bypass grafting.

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  Figure 2. Flow chart with details of inclusions and eligibility of patients. LAD, Left descending artery; SV, saphenous vein; RA, radial artery.

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  Figure 3. A, Graft flow before (median, 4.0 mL/minute; interquartile range [IQR], 2.0-8.0 mL/minute) and after revision (median, 28.0 mL/minute; IQR, 10.8-38.5) (n = 32; P .001). Data are presented as box and whisker dot plots with the upper and lower borders of the box representing the 25th and 75th percentile (upper and lower quartiles). The middle horizontal line represents the median and diamond dot the mean. The lower and upper whiskers represent the minimum and maximum values of nonoutliers. Extra dots represent outliers. B, Pulsatility index (PI) (median, 12.0; IQR, 4.5-25) before and after revision (median, 2.5; IQR, 2.05-4.23) (n = 33; P < .001). Data are presented as box and whisker dot plots with the upper and lower borders of the box representing the 25th and 75th percentile (upper and lower quartiles). The middle horizontal line represents the median and diamond dot the mean. The lower and upper whiskers represent the minimum and maximum values of nonoutliers. Extra dots represent outliers.

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  Figure 4. At univariate analysis, primary end point (major adverse cardiac event [MACE]) occurrence was higher in case of inadequate (≤15 mL/minute) flow on the left anterior descending artery (LAD) graft (odds ratio, 3.21; 95% CI, 1.67-5.95; P < .001).

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  Figure 5. Inadequate (≤15 mL/minute) flow on left anterior descending artery graft is a risk factor for the primary end point. EFCAD, Evaluation of Transit-Time Flow in Coronary Artery Disease Surgery; CABG, coronary artery bypass grafting; TTFM, transit-time flow measurement; PI, pulsatility index; LITA, left internal thoracic artery; LAD, left descending artery; DF, diastollic filling.

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  Figure 6. A, Transit-time flow measurement (TTFM) assessment of a malfunctioning left internal thoracic artery (LITA) to left anterior descending artery (LAD) graft before revision. B, TTFM assessment of a malfunctioning LITA to LAD graft after revision. PI, Pulsatility index; DF, diastollic filling; ACI, acoustic coupling index.