Table 1. Baseline Characteristics of ICD Cohort.
|
RBBB
(n=19) |
LBBB
(n=45) |
LVCD
(n=35) |
QRSd<120
(n=134) |
P-Value
(RBBB vs. LBBB) |
|
|---|---|---|---|---|---|
| Age (yrs) | 59.1 ± 7.8 | 59.7 ± 11.4 | 64.2 ± 12.6 | 54.6 ± 12.2 | 0.85 |
| Female | 14 (74%) | 29 (64%) | 27 (77%) | 109 (81%) | 0.48 |
| LVEF (%) | 24.9 ± 8.7 | 25.0 ± 9 | 26.1 ± 8.9 | 28.3 ± 8.9 | 0.98 |
| Ischemic | 15 (79%) | 13 (29%) | 25 (71%) | 78 (58%) | <0.0001 * |
| QRS Duration (ms) | 150.3 ± 16.8 | 162.2 ± 20.3 | 130.7 ± 14.1 | 98.3 ± 10.7 | 0.028 * |
| Ethnicity | 0.27 | ||||
| Caucasian | 15 (79%) | 34 (76%) | 27 (77%) | 86 (64%) | |
| African American | 3 (16%) | 10 (22%) | 8 (23%) | 42 (31%) | |
| Other | 1 (5%) | 0 (0%) | 0 (0%) | 5 (4%) | |
| NYHA Class | 0.095* | ||||
| I | 4 (21%) | 2 (4%) | 9 (26%) | 43 (32%) | |
| II | 7 (37%) | 16 (36%) | 4 (11%) | 68 (51%) | |
| III | 8 (42%) | 27 (60%) | 22 (63%) | 23 (17%) | |
| LVEDV/BSA (m1/m2) | 114.9 ± 34.4 | 137.2 ± 50.0 | 131.4 ± 43.1 | 115.6 ± 36.3 | 0.081* |
| LVESV/BSA (m1/m2) | 89.0 ± 37.3 | 105.9 ± 51.7 | 98.8 ± 40.5 | 84.8 ± 34.6 | 0.20* |
| LV Mass/BSA (m1/m2) | 73.5 ± 22.5 | 82.1 ± 32.6 | 78.9 ± 27 | 70.2 ± 20.8 | 0.30* |
*
indicates p<0.05 for groupwise comparison among 4 groups