BACKGROUND: The role of heart failure-specific therapies in left ventricular assist device (LVAD) recipients is unclear, and observational data suggest improved outcomes with neurohormonal blockers. OBJECTIVES: ENVAD-HF (Multicenter, Randomized, Open-Label, Parallel Group, Study to Evaluate the Use of Sacubitril/Valsartan in HeartMate 3 LVAD Recipients) sought to evaluate the safety and tolerability of the angiotensin-neprilysin inhibitor sacubitril/valsartan vs standard of care (SOC) for managing blood pressure (BP) in HeartMate 3 LVAD recipients. METHODS: ENVAD-HF was a prospective multicenter, randomized, open-label study of sacubitril/valsartan vs SOC for managing BP (mean arterial pressure goal: 75-90 mm Hg) in stable LVAD recipients with 12-month follow-up. The composite primary endpoint was time to death, deterioration in renal function, hyperkalemia, or symptomatic hypotension leading to drug withdrawal. Exploratory endpoints included clinical and biomarker assessments and patient-reported outcomes. RESULTS: In 60 randomized patients (30 in each arm), sacubitril/valsartan compared with SOC demonstrated an HR of 0.42 (95% CI: 0.08-2.18; P = 0.30) for the primary endpoint at 12 months. Two primary endpoints were reached in the sacubitril/valsartan group (1 death and 1 symptomatic hypotension event) compared with 5 in the SOC group (2 deaths, 2 worsening renal function events, and 1 symptomatic hypotension event). Numerical trends in favor of sacubitril/valsartan were noted for other exploratory endpoints, including a reduced number of BP medications (difference: -1.09 [95% CI: -1.52 to -0.66]; P < 0.0001) and a significantly better Kansas City Cardiomyopathy Questionnaire-Overall Summary Score (improvement: +10.6 [95% CI: 2.6-18.7]; P = 0.011). CONCLUSIONS: ENVAD-HF, a prospective randomized controlled trial of angiotensin-neprilysin inhibition in stable HeartMate 3 LVAD recipients, demonstrated the safety and tolerability of this therapy in this unique population. The trial forms the basis for a pivotal trial to investigate the usefulness of HF-specific therapies in the LVAD population. (Sacubitril/Valsartan in Left Ventricular Assist Device Recipients [ENVAD-HF], NCT04103554; A multicENter, randomized, open-label, parallel group, pilot study to evaluate the use of sacubitril/valsartan in HeartMate 3 LVAD recipients, 2019-003888-22).

Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA

Department of Cardiac and Transplant Surgery Dubrava University Hospital Zagreb Croatia

Department of Cardiac and Vascular Diseases Jagiellonian University Medical College Institute of Cardiology; Saint John Paul 2 Hospital Krakow Poland

Department of Cardiology Division of Heart and Lungs University Medical Centre Utrecht University of Utrecht Utrecht the Netherlands

Department of Cardiology University Hospital of Zurich Zurich Switzerland

Department of Cardiovascular Diseases University of Zagreb School of Medicine University Hospital Centre Zagreb Zagreb Croatia

Department of Cardiovascular Surgery University of Zagreb School of Medicine University Hospital Centre Zagreb Zagreb Croatia

Division of Cardiology Montefiore Health System Bronx New York USA

Erasmus University Medical Centre Cardiovascular Institute Department of Cardiology Rotterdam the Netherlands

Institute for Clinical and Experimental Medicine Prague Czech Republic

Seymour Paul and Gloria Milstein Division of Cardiology Department of Medicine Columbia University Irving Medical Center NewYork Presbyterian Hospital New York New York USA

University of Zagreb School of Medicine Zagreb Croatia

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