CMR measurements | Idiopathic LBBB (n = 53) | Control group A CVRF ( +) (n = 53) | Control group B CVRF (−) (n = 26) | p (LBBB vs. control group A) | p (LBBB vs. control group B) |
---|---|---|---|---|---|
LVEF (%) | 53.7 ± 4.6 | 62.9 ± 4.2 | 64.4 ± 5.0 | < 0.001 | < 0.001 |
sMAPSE (mm) | 11 (10–12.5) | 13 (11–14) | 13 (11–16) | < 0.01 | < 0.001 |
GCS | − 17.5 ± 3.0 | − 20.5 ± 2.5 | − 21.5 ± 2.2 | < 0.001 | < 0.0001 |
GLS | − 15.7 ± 3.0 | − 18.2 ± 2.3 | − 19.7 ± 3.2 | < 0.001 | < 0.0001 |
LVEDV (ml) | 156.6 ± 39.3 | 135.5 ± 24.8 | 133.3 ± 28.0 | < 0.01 | < 0.01 |
LVEDVI (ml/m2) | 82.5 ± 14.9 | 71.8 ± 9.9 | 71.4 ± 13.1 | < 0.001 | < 0.01 |
RVEDV (ml) | 129.9 ± 30.5 | 130.3 ± 31.4 | 141.3 ± 33.9 | 0.940 | 0.228 |
RVEDVI (ml/m2) | 68.4 ± 11.3 | 68.8 ± 11.8 | 73.3 ± 13.9 | 0.871 | 0.181 |
RVEF (%) | 64.4 ± 6.6 | 65.0 ± 6.7 | 61.8 ± 6.3 | 0.641 | 0.191 |
TAPSE (mm) | 21 (19–24) | 22 (19.5–26) | 22 (19–25) | 0.120 | 0.346 |
LV mass (g) | 97 ± 27 | 88 ± 22 | 87 ± 20 | 0.077 | 0.104 |
Native T1 | |||||
1.5 T | n = 22 | n = 21 | n = 13 | ||
Global (ms) | 1023 ± 25 | 1009 ± 20 | 1000 ± 20 | 0.060 | < 0.05 |
Septal (ms) | 1046 ± 30 | 1022 ± 22 | 1006 ± 17 | < 0.01 | < 0.001 |
Lateral (ms) | 1017 ± 27 | 1006 ± 29 | 988 ± 28 | 0.185 | < 0.01 |
3 T | n = 19 | n = 26 | n = 13 | ||
Global (ms) | 1260 ± 39 | 1238 ± 25 | 1216 ± 64 | < 0.05 | < 0.05 |
Septal (ms) | 1293 ± 56 | 1256 ± 30 | 1252 ± 26 | < 0.01 | 0.062 |
Lateral (ms) | 1225 ± 42 | 1226 ± 30 | 1219 ± 37 | 0.981 | 0.723 |
T2 | |||||
1.5 T | n = 12 | n = 19 | n = 12 | ||
Global (ms) | 53.5 ± 2.3 | 53.8 ± 1.8 | 52.1 ± 1.8 | 0.094 | 0.709 |
3 T | n = 6 | n = 24 | n = 11 | ||
Global (ms) | 45.9 ± 3.0 | 47.7 ± 2.3 | 46.5 ± 2.6 | 0.137 | 0.698 |