Rasmus Rivinius1, Matthias Helmschrott1, Arjang Ruhparwar2, Ann-Kathrin Rahm1,3, Fabrice F Darche1, Dierk Thomas1, Tom Bruckner4, Philipp Ehlermann1, Hugo A Katus1, Andreas O Doesch5. 1. Department of Cardiology, Angiology and Pneumology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany. 2. Department of Cardiac Surgery, Heidelberg University Hospital, Heidelberg, Germany. 3. Faculty of Medicine, University of Heidelberg, Heidelberg, Germany. 4. Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany. 5. Department of Cardiology, Angiology and Pneumology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany. klinische.herztransplantation@med.uni-heidelberg.de.
Abstract
BACKGROUND: Patients after heart transplantation (HTX) present with sinus tachycardia due to graft denervation. As elevated heart rates negatively affect survival, the aim of this study was to analyze the effects of ivabradine vs metoprolol succinate on heart rate, left ventricular (LV) mass and survival following HTX. METHODS: This observational retrospective single-center study assessed 84 patients continuously receiving either ivabradine (n = 40) or metoprolol succinate (n = 44) within 2 years after HTX. Patients with dual therapy (ivabradine and metoprolol succinate), other beta blockers, amiodarone, or digitalis were excluded. Patient characteristics, post-transplant medication, heart rates, LV mass, and survival were investigated. RESULTS: Analysis of patient characteristics, immunosuppressive drug regimen, and post-transplant medication showed no significant differences between groups except for ivabradine and metoprolol succinate. Baseline heart rates differed not significantly between patients treated with ivabradine [87.0 beats per minute (bpm)] and metoprolol succinate (86.2 bpm; P = 0.6395). At 2-year follow-up, patients with ivabradine (76.7 bpm) had a significantly lower heart rate compared to baseline (P < 0.0001) and to metoprolol succinate (82.0 bpm; P = 0.0283). LV mass in patients receiving ivabradine was lower at 2-year follow-up compared to baseline (P = 0.0067) and patients receiving metoprolol succinate (P = 0.0179). Patients with ivabradine had a superior 2-year survival after HTX (P = 0.0049). CONCLUSION: Treatment with ivabradine in patients within 2 years after HTX significantly reduced post-transplant heart rate and LV mass and was associated with a superior survival in comparison with patients receiving metoprolol succinate.
BACKGROUND:Patients after heart transplantation (HTX) present with sinus tachycardia due to graft denervation. As elevated heart rates negatively affect survival, the aim of this study was to analyze the effects of ivabradine vs metoprolol succinate on heart rate, left ventricular (LV) mass and survival following HTX. METHODS: This observational retrospective single-center study assessed 84 patients continuously receiving either ivabradine (n = 40) or metoprolol succinate (n = 44) within 2 years after HTX. Patients with dual therapy (ivabradine and metoprolol succinate), other beta blockers, amiodarone, or digitalis were excluded. Patient characteristics, post-transplant medication, heart rates, LV mass, and survival were investigated. RESULTS: Analysis of patient characteristics, immunosuppressive drug regimen, and post-transplant medication showed no significant differences between groups except for ivabradine and metoprolol succinate. Baseline heart rates differed not significantly between patients treated with ivabradine [87.0 beats per minute (bpm)] and metoprolol succinate (86.2 bpm; P = 0.6395). At 2-year follow-up, patients with ivabradine (76.7 bpm) had a significantly lower heart rate compared to baseline (P < 0.0001) and to metoprolol succinate (82.0 bpm; P = 0.0283). LV mass in patients receiving ivabradine was lower at 2-year follow-up compared to baseline (P = 0.0067) and patients receiving metoprolol succinate (P = 0.0179). Patients with ivabradine had a superior 2-year survival after HTX (P = 0.0049). CONCLUSION: Treatment with ivabradine in patients within 2 years after HTX significantly reduced post-transplant heart rate and LV mass and was associated with a superior survival in comparison with patients receiving metoprolol succinate.
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