Table 4.
Predictors of echocardiographic response
| Echo responder |
Univariate |
Multivariate 1 |
Multivariate 2 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Factors | Odds | 95% CI lower | 95% CI upper | P value | Odds | 95% CI lower | 95% CI upper | P value | Odds | 95% CI lower | 95% CI upper | P value |
| Age | 0.977 | 0.937 | 1.018 | .262 | ||||||||
| Female | 15.162 | 1.912 | 120.24 | .01 | 17.143 | 1.853 | 158.57 | .012 | 22.87 | 2.518 | 207.73 | .005 |
| ICM | 0.631 | 0.265 | 1.502 | .298 | ||||||||
| NICM | 1.585 | 0.666 | 3.773 | .298 | ||||||||
| LVEDD 5 mm | 0.96 | 0.802 | 1.149 | .655 | ||||||||
| LVEF 5% | 0.841 | 0.664 | 1.065 | .151 | ||||||||
| Baseline QRS by 10 ms | 0.941 | 0.754 | 1.174 | .588 | ||||||||
| Baseline QRS >150 ms | 1.018 | 0.426 | 2.436 | .968 | ||||||||
| QRS reduction 10 ms | 1.472 | 1.169 | 1.855 | .001 | 1.484 | 1.121 | 1.964 | .006 | 1.579 | 1.208 | 2.064 | .001 |
| Stimulus to peak LVAT -5 ms | 1.306 | 1.103 | 1.546 | .002 | 1.13 | 0.933 | 1.37 | .211 | ||||
| RBNA | 0.745 | 0.271 | 2.05 | .569 | ||||||||
| RBLA | 1.216 | 0.501 | 2.949 | .666 | ||||||||
| RBRA | 1.055 | 0.314 | 3.542 | .932 | ||||||||
| RBBB elimination | 1.912 | 0.728 | 5.023 | .189 | ||||||||
| RBBB attenuation | 0.523 | 0.199 | 1.374 | .189 | ||||||||
| Rescue LBBAP | 1.941 | 0.194 | 19.46 | .573 | ||||||||
| Primary CRT indication | 0.970 | 0.410 | 2.292 | .944 | ||||||||
CRT = cardiac resynchronization therapy; ICM = ischemic cardiomyopathy; LBBAP = left bundle branch area pacing; LVAT = left ventricular activation time; LVEDD = left ventricular end-diastolic diameter; LVEF = left ventricular ejection fraction; NICM = nonischemic cardiomyopathy; RBBB = right bundle branch block; RBLA = right bundle branch block with left axis deviation; RBNA = right bundle branch block with normal axis; RBRA = right bundle branch block with right axis deviation.