Table 1.
Synchrony values
| Study |
||||||
|---|---|---|---|---|---|---|
| Parameter | A | B | C | D | E | F |
| EADM | ||||||
| Endocardial dyssynchronous | 18.1±7.6 | 19.4±1.6 | 24.5±0.2 | 18.8±4.6 | 25.9±2.0 | 24.9±0.3 |
| Endocardial synchronous | 5.4±7.6 | 4.3±1.6 | 4.9±0.2 | 12.3±4.6 | 14.9±2.0 | 11.7±0.3 |
| Epicardial dyssynchronous | 39.1±2.7 | 44.7±2.7 | 53.7±0.8 | 45.4±0.6 | 48.5±0.7 | 43.3±0.2 |
| Epicardial synchronous | 9.6±2.7 | 11.1±2.7 | 11.5±0.8 | 4.7±0.6 | 12.0±0.7 | 13.3±0.2 |
| Measured AVt | ||||||
| Endocardial | 47.2±3.5 | 105.4±1.0 | 89.5±0.4 | 71.8±3.2 | 81.5±2.1 | 68.0±1.0 |
| Epicardial | 43.9±3.0 | 93.4±2.8 | 82.6±1.1 | 81.3±0.9 | 92.1±1.0 | 85.5±0.3 |
| Difference (endo – epi) | 3.3±4.6 | 12.0±3.0 | 6.9±1.1 | −9.6±3.3 | −10.6±2.3 | −17.5±1.1 |
| Computed AVt | ||||||
| Endocardial | 48.3±0.1 | 108.6±0.4 | 101.0±0.2 | 75.4±1.2 | 82.2±0.7 | 74.9±0.3 |
| Epicardial | 43.5±1.1 | 97.2±1.4 | 92.2±0.5 | 84.4±0.5 | 89.7±0.5 | 85.4±0.6 |
| Difference (endo – epi) | 4.8±1.1 | 11.4±1.4 | 8.8±0.6 | −9.0±1.3 | −7.5±0.8 | −10.5±0.7 |
Values are means ± SE for 6 animals (A–F). The electrical activation delay magnitude (EADM) values are shown for the endocardial (endo) and epicardial (epi) synchronous and dyssynchronous asymptotes for each animal. Measured and computed values for the endocardial and epicardial transition AV delays (AVt) and their differences are shown.