Table 7 Relationship between QRS morphology and QRS duration before and after S/V therapy
QRS morphology | QRS duration before S/V therapy Mean ± SD | QRS duration 6 months after S/V therapy Mean ± SD | Paired differences | p value | ||
|---|---|---|---|---|---|---|
Mean ± SD | 95% Confidence interval of the difference | |||||
Lower | Upper | |||||
LBBB | 132.1 ± 14.3 | 123.6 ± 17.7 | 8.52 ± 8.3 | 5.11 | 11.9 | 0.000 |
RBBB | 128 ± 13.7 | 120.3 ± 15.1 | 7.6 ± 10.3 | 2.13 | 13.1 | 0.01 |
IVCD | 139.5 ± 11.8 | 130.3 ± 10.3 | 9.23 ± 6.9 | 6.4 | 12.1 | 0.000 |