Table 2 CMR parameters pre and 6Â m post-TAVR according to post-procedure QRS status
|  | nQRS (n = 24) | LBBB-T (n = 24) | P Value |
|---|---|---|---|
Left ventricular ejection fraction | |||
 Pre-procedure | 54.1 ± 11.5 | 56.6 ± 10.5 | 0.386 |
 Post-procedure | 58.7 ± 9.0 | 54.4 ± 9.3 | 0.070 |
  P Value | 0.010 | 0.092 |  |
Global longitudinal strain, % | |||
 Pre-procedure | −15.6 ± 3.9 | −16.2 ± 4.2 | 0.638 |
 Post-procedure | −17.7 ± 2.7 | −15.9 ± 3.4 | 0.053 |
  P Value | 0.009 | 0.771 |  |
Indexed left ventricular mass, g/m2 | |||
 Pre-intervention | 74.3 ± 14.7 | 73.3 ± 17.4 | 0.650 |
 Post-intervention | 58.4 ± 12.6 | 60.0 ± 13.7 | 0.665 |
  P Value | <0.001 | <0.001 |  |
Indexed left ventricular end diastolic volume, ml/m2 | |||
 Pre-intervention | 97.8 ± 22.8 | 93.4 ± 22.1 | 0.500 |
 Post-intervention | 90.5 ± 21.0 | 90.3 ± 21.0 | 0.968 |
  P Value | 0.051 | 0.298 |  |
Indexed left ventricular end systolic volume, ml/m2 | |||
 Pre-intervention | 46.6 ± 20.4 | 41.8 ± 17.7 | 0.458 |
 Post-intervention | 38.7 ± 16.2 | 42.4 ± 17.8 | 0.523 |
  P Value | 0.011 | 0.886 |  |
Indexed left ventricular stroke volume, ml/m2 | |||
 Pre-intervention | 51.2 ± 10.3 | 51.4 ± 10.5 | 0.945 |
 Post-intervention | 51.8 ± 8.7 | 47.9 ± 8.5 | 0.122 |
  P Value | 0.742 | 0.035 |  |
Indexed left atrial volume, ml/m2 | |||
 Pre-intervention | 67.9 ± 19.2 | 72.9 ± 23.3 | 0.232 |
 Post-intervention | 60.0 ± 18.2 | 67.9 ± 23.8 | 0.199 |
  P Value | 0.002 | 0.180 |  |