Table 1.
Population and Device Characteristics.
| Reported NSVT group A (n = 86) | non-NSVT group B (n = 322) | Combined (n = 408) | P-value | |
|---|---|---|---|---|
| Age | 75.7 ± 9.8 | 75.6 ± 10.8 | 75.6 ± 10.6 | 0.82 |
| Male gender | 63 (73%) | 188 (58%) | 251 (62%) | 0.012 |
| Comorbidities | ||||
| Ischemic Cardiomyopathy | 24 (28%) | 88 (27%) | 112 (27%) | 0.105 |
| Non-ischemic Cardiomyop. | 3 (4%) | 12 (4%) | 15 (4%) | 0.66 |
| Aortic Valve Disease | 19 (22%) | 45 (14%) | 64 (16%) | 0.036 |
| History of Syncope | 6 (7%) | 37 (11%) | 43 (11%) | 0.226 |
| Heart Failure | 19 (22%) | 41 (13%) | 60 (15%) | 0.071 |
| LVEF | 56/61/65 | 55/62/67 | 55/62/67 | 0.368 |
| History of Atrial Fibrillation | 23 (27%) | 114 (35%) | 157 (38%) | 0.180 |
| History of Ventricular Arrhythmia | 6 (7%) | 13 (4%) | 19 (5%) | 0.250 |
| Hypertension | 51 (59%) | 195 (61%) | 246 (60%) | 0.832 |
| Diabetes Mellitus | 24 (28%) | 75 (23%) | 99 (24%) | 0.375 |
| Hyperlipidaemia | 35 (41%) | 145 (45%) | 180 (44%) | 0.458 |
| History of Stroke | 4 (5%) | 19 (6%) | 23 (6%) | 0.655 |
| Chronic Renal Insufficiency | 10 (12%) | 33 (10%) | 43 (11%) | 0.711 |
| COPD | 14 (16%) | 21 (7%) | 35 (9%) | 0.004 |
| Hyperthyroidism | 4 (5%) | 8 (2%) | 12 (3%) | 0.293 |
| Hypothyroidism | 7 (8%) | 35 (11%) | 42 (10%) | 0.454 |
| Cancer | 11 (13%) | 38 (12%) | 49 (12%) | 0.809 |
| Connective Tissue Disease | 3 (3%) | 19 (6%) | 22 (5%) | 0.376 |
| Indication to implantation | ||||
| Sinus Node Disease | 18 (21%) | 155 (48%) | 173 (43%) | 0.002 |
| Brady-Tachy Syndrome | 5 (6%) | 69 (21%) | 74 (18%) | <0.001 |
| II or III degree AVB | 68 (79%) | 167 (52%) | 235 (57%) | <0.001 |
| Replacement | 18 (21%) | 87 (27%) | 105 (26%) | 0.251 |
| Pacemaker characteristics | ||||
| Pacing Mode | 0.745 | |||
| VVIR | 11 (13%) | 32 (10%) | 43 (11%) | |
| DDDR | 48 (56%) | 204 (63%) | 252 (62%) | |
| DDD | 26 (30%) | 82 (27%) | 108 (27%) | |
| Bipolar Sensing | 64 (75%) | 216 (68%) | 280 (69%) | 0.190 |
| VP percentage < 2% | 10 (12%) | 82 (25%) | 92 (23%) | 0.004 |
| VP percent. 2–40% | 10 (12%) | 56 (17%) | 66 (16%) | 0.134 |
| VP percentage > 40% | 66 (76%) | 184 (57%) | 250 (61%) | 0.001 |
Data are expressed as mean value ± standard deviation, first/second/third quartile or as count and percentage as appropriate.