PMC3235991_01
80 lead st0 filter map recordings during PCI. (A) In the pre-catheterization setting, there is no significant positive or negative deflection from baseline. (B) When the balloon was inflated, there is marked significant positive elevation of 2.42 mm, also indicated by the bright red colored area in the upper anterior wall, indicating significant ischemia. (C) When the balloon was deflated, there is no significant elevation as indicated by the 1.47 mm deviation from baseline and negative deflection of -0.25 mm. (D) When the stent was deployed, there was a marked decrease in the positive deflection from baseline as compared to when the balloon was inflated.
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Figure 1 represents the ST0 filter map which is a variation of the ST isopotential map that measures the voltage at the beginning of the ST segment or J point. In the pre-catheterization setting, there is no significant positive or negative deflection from baseline, as seen in Figure 1A. When the balloon was inflated (Fig. 1B), there is marked significant positive elevation of 2.42 mm, also indicated by the bright red colored area in the upper anterior wall, indicating significant ischemia. When the balloon was deflated, there is no significant elevation as indicated by the 1.47 mm deviation from baseline and negative deflection of -0.25 mm, seen in Figure 1C. When the stent was deployed (Fig. 1D), there was a marked decrease in the positive deflection from baseline as compared to when the balloon was inflated.