CMR measurements | LBBB with isolated asynchrony (n = 33) | LBBB with superimposed hypocontractility (n = 20) | Control group B CVRF (−) (n = 26) | ANOVA p | Bonferroni Post-Hoc | LBBB with isolated asynchrony vs. control group B | LBBB with superimposed hypocontractility vs. control group B |
---|---|---|---|---|---|---|---|
LBBB with isolated asynchrony vs. LBBB with superimposed hypocontractility | |||||||
LVEDVI (ml/m2) | 78.1 ± 14.3 | 89.8 ± 14.0 | 71.4 ± 13.1 | < 0.001 | < 0.01 | 0.013 | < 0.0001 |
corrected LV-EF (%) | 62.9 ± 3.6 | 55.9 ± 2.8 | 64.4 ± 5.0 | < 0.001 | < 0.001 | 0.450 | < 0.001 |
RVEDVI (ml/m2) | 65.0 ± 9.7 | 74.2 ± 11.7 | 73.3 ± 13.9 | < 0.05 | < 0.05 | 0.072 | 1.000 |
RV-EF (%) | 66.9 ± 5.3 | 60.4 ± 6.8 | 61.8 ± 6.3 | < 0.05 | < 0.01 | 0.294 | 1.000 |
GCS | − 18.5 ± 2.9 | − 15.9 ± 2.4 | − 21.5 ± 2.2 | < 0.001 | < 0.01 | < 0.001 | < 0.001 |
GLS | − 16.4 ± 3.3 | − 14.5 ± 1.8 | − 19.7 ± 3.2 | < 0.001 | < 0.05 | < 0.001 | < 0.001 |
LV mass (g) | 93 ± 25 | 103 ± 30 | 87 ± 20 | 0.090 | 0.420 | 1.000 | 0.088 |
Native T1 times | |||||||
1.5-T | n = 14 | n = 8 | n = 13 | ||||
Global (ms) | 1015 ± 24 | 1035 ± 24 | 1000 ± 20 | < 0.01 | 0.144 | 0.303 | < 0.05 |
Septal (ms) | 1039 ± 24 | 1059 ± 36 | 1006 ± 17 | < 0.001 | 0.271 | < 0.05 | < 0.001 |
Lateral (ms) | 1015 ± 30 | 1021 ± 23 | 988 ± 28 | < 0.05 | 1.000 | 0.069 | 0.050 |
3-T | n = 11 | n = 8 | n = 13 | ||||
Global (ms) | 1253 ± 35 | 1271 ± 43 | 1216 ± 64 | 0.056 | 0.651 | 0.275 | 0.070 |
Septal (ms) | 1282 ± 54 | 1308 ± 60 | 1252 ± 26 | 0.096 | 0.578 | 0.614 | 0.097 |
Lateral (ms) | 1222 ± 28 | 1230 ± 57 | 1219 ± 37 | 0.850 | 1.000 | 1.000 | 1.000 |