Table 2.
EWI vs ECG performance for AP localization
| AP localization methods | Global accuracy | Ventricular segments | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ANT SEPT | POST SEPT | Fasciculo-ventricular | Left LAT | Left POST LAT | Right LAT | Right ANT | |||||||||
| PPV | S | PPV | S | PPV | S | PPV | S | PPV | S | PPV | S | PPV | S | ||
| EWI | 100% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Boersma | 50% 78.6%* |
0.25 | 1 | 1 | 0.4 | 0 | 0 | 0.75 | 1 | 0 | 0 | 0.33 | 1 | 0 | 0 |
| Arruda | 57.1% 78.6%* |
0.33 | 1 | 0.75 | 0.6 | 0 | 0 | 0.67 | 0.67 | 0 | 0 | 0.5 | 1 | 1 | 1 |
PPV stands for Positive Predictive Value, while S stands for Sensitivity
*
When prediction in immediately adjacent segment is considered correct