| Study | Inclusion criteria | Age (Years) | Gender (Male, %) | LVEF (%) | ICM (%) | Intrinsic QRSd (ms) | Success rate (%) |
| Guo et al.2020 | LBBB, LVEF≤35%, NYHA functional class II to IV | 66.1 ± 9.7 | 42.9 | 30.0 ± 5.0 | 9.5 | 167.7 ± 14.9 | 87.5 |
| Li et al. 2020 | LBBB, LVEF ≤ 35%, NYHA functional class II to IV | 56.8 ± 10.1 | 59.5 | 29.3 ± 5.9 | 18.9 | 177.9 ± 18.8 | 81.08 |
| Wang et al. 2020 | Sinus rhythm, LBBB, LVEF≤35%, NYHA functional class II to IV | 64.80 ± 7.25 | 90 | 26.80 ± 3.85 | 10 | 183.60 ± 19.27 | N/A |
| Wu et al. 2020 | LBBB, LVEF≤40%, NYHA functional class II to IV, failed HBP | 67.2 ± 13 | 43.8 | 30.9 ±7.3 | 3.1 | 166.2 ± 16.2 | N/A |
| Liu et al. 2021 | LBBB, LVEF≤35%, NYHA functional class II to IV | 65.5 ± 8.8 | 51.9 | 29.9 ± 4.8 | 25.9 | 177.1 ± 16.7 | 94.12 |
| Zu et al. 2021 | QRSd>150 ms, LBBB, LVEF<35%, NYHA functional class II to IV | 61.77 ± 12.37 | 61.5 | 30.62±6.983 | 0 | 167.46 ± 28.11 | N/A |
| Chen et al. 2022 | QRSd>150 ms, LBBB, LVEF<35%, NYHA functional class II to IV | 67.14± 8.88 | 49.98 | 29.05±5.09 | 26.53 | 180.12 ± 15.79 | 98.00 |
| Hua et al. 2022 | QRSd>150 ms, LBBB, LVEF<35%, NYHA functional class II to IV | 65.50 ± 6.91 | 71.43 | 30.05±7.03 | N/A | 177.91 ± 14.67 | NA |
| Rademakers et al. 2022 | LBBB, LVEF≤35%, NYHA functional class II to IV | 68± 13 | 48 | 28±8 | 28 | 166± 15 | 77.50 |
| Wang et al. 2022 | LBBB, LVEF≤40%, NYHA functional class II to IV, NICM | 62.3 ±11.2 | 35 | 28.3±5.3 | 0 | 174.6± 14.3 | 90.00 |