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Comparison between LBBB and rLBBB and between LBBB and IVCD >120 ms II.
| Variable | QRS post-CRT (ms) | LV-F post-CRT (ms) | P value |
|---|---|---|---|
| LBBB vs rLBBB | 137.5 vs 137.1 | 31.7 vs 29.6 | 0.27 |
| LBBB vs IVCD > 120 ms | 137.5 vs 144.3 | 31.7 vs 29.1 | 0.10 |
Abbreviations: LBBB = complete left bundle branch block; rLBBB = left bundle branch block with residual conduction, IVCD = intraventricular conduction delay, SD = standard deviation.
