Table 1.
Patient and lead characteristics
| Patient characteristics | |
|---|---|
| Patient number | 2205 |
| Age | 66.0 ± 15.7 years |
| Gender | |
| Male | 69% |
| Female | 30% |
| Unknown | 1% |
| Left ventricular ejection fraction | 38.3 ± 16.1% |
| NYHA class (n = 187) | |
| Class 1 | 18.7% |
| Class 2 | 25.1% |
| Class 3 | 40.6% |
| Class 4 | 15.5% |
| Diabetes mellitus (n = 419) | 22.7% |
| Chronic renal disease (n = 393) | 57.3% |
| Cardiomyopathy (n = 542) | |
| DCM | 40.8% |
| ICM | 59.2% |
| Previous cardiac surgery (n = 601) | 27.8% |
| Number of targeted leads | 3849 |
| 74.8% pacemaker leads | |
| 24.6% ICD leads | |
| 0.6% information not available | |
| Implant duration | |
| Mean implant duration | 84.7 ± 61.8 months |
| Median implant duration | 74 months (IQR 41–112) |
| Localisation of leads | |
| Right atrium | 1167 (30.3%) |
| Right ventricle | 2238 (58.1%) |
| Coronary sinus tributary | 395 (10.3%) |
| SVC | 8 (0.2%) |
| Fragment or unknown | 41 (1.1%) |
| Fixation mechanism | |
| Active fixation | 1560 (40.6%) |
| Passive fixation | 1795 (46.6%) |
| Information not available | 494 (12.8%) |
DCM, dilated cardiomyopathy; ICD, implantable cardioverter-defibrillator; ICM, ischaemic cardiomyopathy; IQR, interquartile range; NYHA, New York Heart Association; SVC, superior vena cava.