Figure 3. Bland-Altman plot demonstrating differences in between 12-lead QT measurement and telemetry QT measurement; Figure 3A. Bland-Altman Plot for differences in manually-measured corrected QT (Bazett) on 12-lead ECG vs. 7-lead derived ECG.Figure 3B. Bland-Altman plot for differences in manually-measured corrected QT (Bazett) on 12-lead ECG vs. Lead II Telemetry. In both plots, the solid blue line represents no bias. Solid red line represents mean bias between all measurements. Dashed red line represents ± 2 standard deviations from the mean. Dashed purple line represents ± 3 standard deviations from the mean.