1. Pacemakers are associated with a higher risk of late death and transplantation in the Fontan population.
- Author
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Poh, Chin L., Celermajer, David S., Grigg, Leeanne E., Kalman, Jonathan M., McGuire, Mark A., Gentles, Thomas L., Radford, Dorothy J., Bullock, Andrew, Disney, Patrick J.S., Winlaw, David, du Plessis, Karin, and d'Udekem, Yves
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PROPENSITY score matching , *BIOLOGICAL tags , *SURVIVAL analysis (Biometry) , *ARRHYTHMIA , *TRANSPLANTATION of organs, tissues, etc. - Abstract
Abstract Background The need for permanent pacing has been identified as a predictor of poor outcomes in the late survivors of Fontan surgery. However, it is not clear if the need for a pacemaker is a surrogate marker of a declining Fontan state, or if pacing is deleterious to the Fontan circulation. Objectives We sought to compare the long-term outcomes of propensity-matched Fontan patients with and without a permanent pacemaker. Methods Patients who have survived Fontan completion with a documented history of cardiac arrhythmia were identified from the Australia and New Zealand Fontan Registry. Pacemaker insertion details, cardiac function and electrophysiological data were obtained for the patients with a permanent pacemaker. Survival analysis was performed with propensity score matching to compare late survival and outcomes in patients with versus without a pacemaker. Results There was a total of 310 patients with a history of cardiac arrhythmia, of which 126 (41%) had a permanent pacemaker. After propensity-score matching, 99 pairs were generated (n = 198). Patients with a permanent pacemaker had a higher risk of death (HR 3.32 95% CI 1.60–6.90, p = 0.001) and death or transplantation (HR 3.55 95% CI 1.87–6.73, p < 0.001). Patients who were only paced atrially were not at a significantly increased risk of death or transplantation. However, patients who were ventricular paced >50% of the time were much more likely to encounter late death or transplantation (HR 3.82 95% CI 1.64–8.95, p = 0.002). Conclusions Having a permanent pacemaker and needing ventricular pacing is likely associated with an increased risk of death and transplantation in patients with a Fontan circulation. Highlights • 8% of patients living with a Fontan circulation needed insertion of a permanent pacemaker. • After propensity-score matching, patients with a permanent pacemaker had a higher risk of death and transplantation compared to those without. • Patients who had ventricular pacing more than 50% of the time were at highest risk of death and transplantation, and systemic ventricular dysfunction. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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