Table 2.
Follow-up data for the 90 patients in the cohort who underwent implantable cardioverter defibrillator placement
| Total | QTc ≤ 480 ms | QTc > 480 ms | |
|---|---|---|---|
| n | 90 | 72 | 18 |
| Male/female | 53/37 | 41/31 | 12/6 |
| Follow-up (years) | 4.9 ± 3.3 | 5.0 ± 3.4 | 4.4 ± 3.0 |
| Secondary prevention, n (%) | 15 (17) | 12 (17) | 3 (17) |
| Mean no. of risk factors | 1.8 ± 1.0 | 1.8 ± 0.9 | 1.9 ± 1.1 |
| Presence of RF, n (%) | |||
| NSVT on Holter | 34 (38) | 29 (40) | 5 (28) |
| LVWT >30 mm | 24 (27) | 17 (24) | 7 (39) |
| ABPR on exercise | 21 (23) | 15 (21) | 6 (33) |
| (Near)syncope | 40 (44) | 30 (42) | 10 (56) |
| Family Hx of sudden death | 43 (48) | 36 (50) | 7 (39) |
| Appropriate discharges, n (%) | 11 (12) | 11 (15) | 0 (0) |
All values expressed as mean ± SD. It must be noted that as not always feasible in clinical practice, not all risk factors were routinely assessed for each patient with Holter monitor data least available for these patients. RF, risk factor; LVWT, left ventricular wall thickness; ABPR, abnormal blood pressure response.