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| Item Type: | Article |
|---|---|
| Title: | Long-term clinical effects of ventricular pacing reduction with a changeover mode to minimize ventricular pacing in a general pacemaker population |
| Creators Name: | Stockburger, M. and Boveda, S. and Moreno, J. and Da Costa, A. and Hatala, R. and Brachmann, J. and Butter, C. and Garcia Seara, J. and Rolando, M. and Defaye, P. |
| Abstract: | AIM: Right ventricular pacing (VP) has been hypothesized to increase the risk in heart failure (HF) and atrial fibrillation (AF). The ANSWER study evaluated, whether an AAI-DDD changeover mode to minimize VP (SafeR) improves outcome compared with DDD in a general dual-chamber pacemaker population. METHODS AND RESULTS: ANSWER was a randomized controlled multicentre trial assessing SafeR vs. standard DDD in sinus node disease (SND) or AV block (AVB) patients. After a 1-month run-in period, they were randomized (1 : 1) and followed for 3 years. Pre-specified co-primary end-points were VP and the composite of hospitalization for HF, AF, or cardioversion. Pre-specified secondary end-points were cardiac death or HF hospitalizations and cardiovascular hospitalizations. ANSWER enrolled 650 patients (52.0% SND, 48% AVB) at 43 European centres and randomized in SafeR (n = 314) or DDD (n = 318). The SafeR mode showed a significant decrease in VP compared with DDD (11.5 vs. 93.6%, P < 0.0001 at 3 years). Deaths and syncope did not differ between randomization arms. No significant difference between groups [HR = 0.78; 95% CI (0.48-1.25); P = 0.30] was found in the time to event of the co-primary composite of hospitalization for HF, AF, or cardioversion, nor in the individual components. SafeR showed a 51% risk reduction (RR) in experiencing cardiac death or HF hospitalization [HR = 0.49; 95% CI (0.27-0.90); P = 0.02] and 30% RR in experiencing cardiovascular hospitalizations [HR = 0.70; 95% CI (0.49-1.00); P = 0.05]. CONCLUSION: SafeR safely and significantly reduced VP in a general pacemaker population though had no effect on hospitalization for HF, AF, or cardioversion, when compared with DDD. |
| Keywords: | Dual-Chamber Pacing, Minimization of Ventricular Pacing, Heart Failure, Atrial Fibrillation, Randomized Controlled Trial, SafeR |
| Source: | European Heart Journal |
| ISSN: | 0195-668X |
| Publisher: | Oxford University Press |
| Volume: | 36 |
| Number: | 3 |
| Page Range: | 151-157 |
| Date: | 14 January 2015 |
| Official Publication: | https://doi.org/10.1093/eurheartj/ehu336 |
| PubMed: | View item in PubMed |
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