Quantitative Evaluation of the Relationship between T-Wave-Based Features and Serum Potassium Level in Real-World Clinical Practice

Figure 2

Process and quality evaluation of T-amp and T-right slope measurements. Original ECGs are stored in PDF format (a). ECG waveforms have been extracted and evaluated using web-based evaluation tools (b). Measurements of T-amp (c) and T-right slope (d) between the two evaluators are well correlated. Measurements that have a discrepancy between the two evaluators (marked with orange color) are excluded from further analysis. T-amp: amplitude; T-right slope: right slope of T-waves.