Journal of the American College of Cardiology
Clinical studies
Ventricular tachycardias above the initially programmed tachycardia detection interval in patients with implantable cardioverter-defibrillatorsIncidence, prediction and significance
Dietmar Bänsch, Marco Castrucci, Dirk Böcker, Günter Breithardt and Michael Block
Table 2
Table 2
Kaplan Meyer Analysis for Major Eventslegend
| Risk Per Year (%) | 1st | 2nd | 3rd | 4th | Log Rank |
|---|---|---|---|---|---|
| VT/VF | 59.2 | 23.9 | 13.7 | 8.3 | |
| VT below detection rate | 3.0 | 2.7 | 3.5 | 2.7 | |
| Recurrent VT below detection rate | 11.8 | 12.5 | 26.6 | — | |
| VT below detection rate | |||||
| NYHA I (N = 142) | 0.8 | 1.0 | 0 | — | |
| NYHA II + III (N = 517) | 3.6 | 3.2 | 4.8 | — | 0.021 |
| Ejection fraction | |||||
| >0.40 (N = 320) | 2.7 | 0.9 | 1.3 | 1.9 | |
| <0.40 (N = 339) | 3.3 | 3.7 | 6.2 | 3.8 | 0.027 |
| Presenting spontaneous tachycardia | |||||
| VF (N = 330) | 1.4 | 0.9 | 1.4 | 1.1 | |
| mVT (N = 329) | 4.7 | 4.6 | 5.9 | 4.9 | <0.001 |
| No inducible mVT/inducible VF (N = 293) | 0.5 | 1.3 | 0.9 | 0 | |
| Inducible mVT (N = 366) | 4.0 | 3.7 | 5.3 | 4.6 | <0.001 |
| No antiarrhythmic drug at discharge (N = 419) | 0.8 | 1.6 | 3.1 | 1.0 | |
| Beta-blocker (N = 136) | 3.3 | 3.2 | 2.8 | 4.2 | NS |
| Amiodarone (N = 41) | 25.0 | 5.3 | — | — | <0.001 |
| d-sotalol/dl-sotalol (N = 46) | 4.7 | 5.8 | 7.7 | 11.1 | 0.004 |
↵legend NYHA = New York Heart Association; mVT = monomorphic ventricular tachycardia; VF = ventricular fibrillation; VT = ventricular tachycardia.
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