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. Author manuscript; available in PMC: 2018 Nov 29.
Published in final edited form as: J Electrocardiol. 2018 Aug 13;51(6 Suppl):S116–S120. doi: 10.1016/j.jelectrocard.2018.08.017

Figure 2 -.

Figure 2 -

The generation of a run-metric plot for the ST40% metric over an episode of ischemia. A) An overlay of each representative beat recorded on a single electrode during an episode of ischemia. The red spheres show the ST40% time instants for every beat. B) A run-metric showing the potential values of the ST40% time instants over the course of the ischemic episode. Blue line: Max value achieved by that metric during the episode. Green line: Average value of the metric during the beats recorded before the ischemic episode. Magenta line: The amplitude of the predetermined threshold. C) The formulas used to calculate the predetermined threshold (TTT) and the contrast ratio calculation.