Table 3.
Preprocedural Echocardiographic Findings and Device Data
| All (N = 14) | SW (n = 9) | NW (n = 5) | P Value (SW vs NW) | |
|---|---|---|---|---|
| Echocardiographic findings | ||||
| LVEDd, mm | 68.8 ± 8.3 | 72.6 ± 7.1 | 62.0 ± 6.0 | 0.016 |
| LVESd, mm | 62.9 ± 9.1 | 66.8 ± 7.9 | 55.8 ± 6.8 | 0.023 |
| LVEDV, mL | 254 ± 82 | 266 ± 94 | 232 ± 57 | 0.739 |
| LVESV, mL | 204 ± 76 | 216 ± 85 | 181 ± 59 | 0.386 |
| LVEF, % | 20.9 ± 6.3 | 19.6 ± 4.7 | 23.2 ± 8.7 | 0.321 |
| IVS, mm | 6.2 ± 1.3 | 6.1 ± 1.5 | 6.4 ± 0.9 | 0.574 |
| PW, mm | 6.9 ± 2.3 | 7.4 ± 2.1 | 6.0 ± 2.6 | 0.285 |
| LAD, mm | 49.1 ± 11.4 | 51.9 ± 11.3 | 44.2 ± 10.7 | 0.239 |
| MR, grade | 0.5 | 0 | 2 | 0.010 |
| MR ≥2 | 5 (36) | 1 (11) | 4 (80) | 0.010 |
| TR‐PG, mm Hg | 29 ± 15 | 29 ± 14 | 29 ± 19 | 0.998 |
| IVC, mm | 15.8 ± 5.8 | 15.8 ± 5.7 | 15.8 ± 6.5 | 0.995 |
| Device data | ||||
| Device | 0.164 | |||
| CRT without defibrillator | 1 (7) | 0 (0) | 1 (20) | |
| CRT with defibrillator | 13 (93) | 9 (100) | 4 (80) | |
| Hospitalization to CRT, d | 75 ± 48 | 68 ± 24 | 88 ± 79 | 0.606 |
| Manufacturer | 0.803 | |||
| SJM | 5 (36) | 3 (33) | 2 (40) | |
| Medtronic | 9 (64) | 6 (67) | 3 (60) | |
| LV lead placement | 0.078 | |||
| Coronary sinus lead | 10 (71) | 5 (56) | 5 (100) | |
| Surgical epicardial lead | 4 (29) | 4 (44) | 0 (0) | |
| Upgrade from PM/ICD | 6 (43) | 3 (33) | 3 (60) | 0.334 |
| Procedure‐related complication | 4 (29) | 1 (11) | 3 (60) | 0.052 |
| BiV pacing rate after CRT, % | 96 ± 5 | 95 ± 6 | 98 ± 2 | 0.166 |
Abbreviations: BiV, biventricular; CRT, cardiac resynchronization therapy; ICD, implantable cardioverter‐defibrillator; IVC, inferior vena cava; IVS, interventricular septum; LAD, left atrial diameter; LV, left ventricular; LVEDd, left ventricular end‐diastolic diameter; LVEDV, left ventricular end‐diastolic volume; LVEF, left ventricular ejection fraction; LVESd, left ventricular end‐systolic diameter; LVESV, left ventricular end‐systolic volume; MR, mitral regurgitation; NW, nonwithdrawal; PM, pacemaker; PW, posterior wall; SJM, St. Jude Medical; SW, successful withdrawal; TR‐PG, tricuspid regurgitation pressure gradient. Data are presented as mean ± SD, median, or n (%).