Table 3 Comparison of dyssynchrony measurements in three ventricular slices in patients with and without LBBB, and healthy subjects.
From: Circumferential myocardial strain in cardiomyopathy with and without left bundle branch block
| LBBB | Non-LBBB | Healthy | p(LBBB vs. non LBBB)* | p(LBBB vs. healthy)* | p(non-LBBB vs. healthy)* | ||
|---|---|---|---|---|---|---|---|
| Basal |
IL-AS (ms) (range) | 391 ± 37 (325-425) |
136 ± 79 (0-325) |
45 ± 23 (0-75) | < 0.0001* | < 0.0001* | 0.001* |
|
AL-IS (ms) (range) | 284 ± 119 (150-425) |
106 ± 54 (0-200) |
68 ± 64 (0-175) | 0.001* | 0.0002* | 0.171 | |
|
A-I (ms) (range) | 122 ± 145 (0-400) |
83 ± 85 (0-225) |
68 ± 32 (0-100) | 0.478 | 0.272 | 0.594 | |
| Mid |
IL-AS (ms) (range) | 353 ± 79 (245-425) |
82 ± 44 (25-140) |
69 ± 39 (0-125) | < 0.0001* | < 0.0001* | 0.451 |
|
AL-IS (ms) (range) | 283 ± 108 (125-400) |
114 ± 37 (25-175) |
50 ± 46 (0-125) | 0.0002* | < 0.0001* | 0.002* | |
|
A-I (ms) (range) | 168 ± 164 (0-475) |
69 ± 46 (0-175) |
64 ± 55 (0-150) | 0.097 | 0.084 | 0.791 | |
| Apical |
IL-AS (ms) (range) | 278 ± 118 (140-425) |
61 ± 47 (0-325) |
38 ± 41 (0-75) | < 0.0001* | < 0.0001* | 0.260 |
|
AL-IS (ms) (range) | 224 ± 118 (150-425) |
70 ± 63 (0-200) |
54 ± 24 (0-175) | 0.002* | 0.001* | 0.437 | |
|
A-I (ms) (range) | 96 ± 110 (0-300) |
48 ± 43 (0-150) |
34 ± 20 (0-75) | 0.200 | 0.093 | 0.601 | |
| T12SD (ms) | 164 ± 30 (131-207) |
70 ± 17 (51-103) |
65 ± 17 (44-97) | < 0.0001* | < 0.0001* | 0.467 |