Research Article
Myocardial Scar on Surface ECG: Selvester Score, but Not Fragmentation, Predicts Response to CRT
Table 1
LBBB Selvester score criteria.
| | Lead | LBBB Selvester score criteria | Points | Maximum points |
| Anterosuperior wall | I | (i) R/Q ≤ 1.5 | 1 | 1 | (ii) R/S ≤ 1.5 | aVL | (i) Q ≥ 50 ms | 2 | 4 | (ii) Q ≥ 40 ms | 1 | (iii) R/S ≤ 0.5 | 2 | (iv) R/Q ≤ 0.5 | (v) R/S ≤ 1.0 | 1 | (vi) R/Q ≤ 1.0 |
| Inferior wall | II | (i) Q ≥ 40 ms | 2 | 3 | (ii) Q ≥ 30 ms | 1 | (iii) R/Q ≤ 0.5 | 1 | (iv) R/S ≤ 0.5 | aVF | (i) Q ≥ 50 ms | 2 | 3 | (ii) Q ≥ 40 ms | 1 | (iii) R/Q ≤ 0.5 | 1 | (iv) R/S ≤ 0.5 |
| Anteroseptal wall | V1 | (i) Notch first 40 ms | 1 | 3 | (ii) R ≥ 0.3 mV | 2 | (iii) R ≥ 30 ms | (iv) R ≥ 0.2 mV | 1 | (v) R ≥ 20 ms | V2 | (i) Notch first 40 ms | 1 | 3 | (ii) R ≥ 0.4 mV | 2 | (iii) R ≥ 30 ms | (iv) R ≥ 0.3 mV | 1 | (v) R ≥ 20 ms |
| Posterolateral wall | V1 | (i) S/S’ ≥ 2.0 | 3 | 3 | (ii) S/S’ ≥ 1.5 | 2 | (iii) S/S’ ≥ 1.25 | 1 | V2 | (i) S/S’ ≥ 2.5 | 3 | 3 | (ii) S/S’ ≥ 2.0 | 2 | (iii) S/S’ ≥ 1.5 | 1 |
| Apical segments | I | (i) Any Q | 1 | 2 | (ii) R ≤ 0.2 mV | (iii) R/Q ≤ 1.0 | 1 | (iv) R/S ≤ 1.0 | V5 | (i) Any Q | 1 | 4 | (ii) R/R’ ≥ 2.0 | 2 1 | (iii) R/R’ ≥ 1.0 | (iv) R/S ≤ 2.0 | (v) R ≤ 0.5 mV | 1 | V6 | (i) Q ≥ 20 ms | 1 | 4 | (ii) R/R’ ≥ 2.0 | 2 1 | 383 | (iii) R/R’ ≥ 1.0 | (iv) R/S ≤ 2.0 | (v) R ≤ 0.6 mV | 1 | 384 |
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