Table 4.
Procedure and echocardiographic and pacing characteristics of LBBAP (all patients)
| Variable | Overall LBBAP | n |
|---|---|---|
| Average procedural time, minutes | 105.70 ± 51.13 | 370 |
| Average fluoroscopic time, minutes | 15.75 ± 13.78 | 418 |
| NYHA class at 6- to 12-month follow-up | 1.63 ± 0.63 | 458 |
| LVEF at 6- to 12-month follow-up, % | 46.61 ± 11.32 | 446 |
| LVEDD at 6- to 12-month follow-up, mm | 54.41 ± 8.90 | 417 |
| LVESV at 6- to 12-month follow-up, mL | 78.55 ± 49.53 | 373 |
| LVEDV at 6- to 12-month follow-up, mL | 139.90 ± 65.69 | 374 |
| Paced QRSd post-implant, ms | 129.76 ± 20.83 | 464 |
| Capture threshold at implantation, V | 0.60 ± 0.28 | 464 |
| Capture threshold at follow-up, V | 0.67 ± 0.27 | 443 |
| R-wave amplitude post implantation, mV | 10.81 ± 5.67 | 416 |
| R-wave amplitude at follow-up, mV | 12.60 ± 5.60 | 406 |
| Impedance post implant, Ω | 656.26 ± 187.39 | 411 |
| Impedance at follow-up, Ω | 529.38 ± 118.90 | 340 |
LBBAP, left bundle branch area pacing; LVEDD, left ventricular end-diastolic diameter; LVEDV, left ventricular end-diastolic volume; LVEF, left ventricular ejection fraction; LVESV, left ventricular end-systolic volume; NHYA, New York Heart Association; QRSd, QRS duration.