Characteristics of study population
| Characteristics | de novo implants n = 136 (%) | Upgrades n = 47 (%) |
|---|---|---|
| Male | 102 (75.5) | 43 (91.6) |
| Median age (years) | 72 | 74 |
| Median follow-up (months) | 8 | 11 |
| Number of deaths during follow-up | 20 (15) | 7 (15) |
| Median time from implant to death (days)* | 347 | 248 |
| Ischaemic cardiomyopathy | 81 (59.9) | 26 (55.4) |
| NYHA class III | 117 (86.6) | 42 (89.5) |
| QRS ≥150ms | 78 (57.7) | 26 (55.4) |
| LBBB † | 134 (99.2) | 46 (98.0) |
| Atrial fibrillation | 49 (36.3) | 23 (49.0) |