Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 4 At postinfarction and eight weeks, chord lengths were clustered by z-score using a k-clustering algorithm (with respect to percent change in contractility and percent change in chord length, perfusion status was not considered in the analysis). The plot above is similar to Figure 3, depicting each cluster using a different color. In this figure, each chord in the ventricular array is depicted using the color corresponding to the cluster to which it belongs. Dashed lines in the lower portion of the figure denote cord lengths with reduced contractility below baseline. Solid lines denote chord lengths with contractility at or above the baseline value. Note that the blue cluster includes all of the borderzone myocardium defined in Figure 3 as well as several infarcted segments. (The significance of this finding is presented in detail in the Discussion section.) The data presented represent a composite constructed from averages of all eight animals. ES = end systole.
|
