The effect of Sacubitril/Valsartan on cardiac function and cardiac remodeling in patients with heart failure with reduced ejection fraction

Background: The aim of this study was to observe the effect of Sacubitril/Valsartan on cardiac function and remodeling in patients with heart failure with reduced ejection fraction (HFrEF). Methods: A total of 120 patients with HFrEF were selected and given standard heart failure treatment according to the 2017 ACC/AHA/HFSA guidelines. Regardless of whether patients had taken AngiotensinConverting Enzyme Inhibitors/Angiotensin Receptor Blockers (ACEI/ARB) medications previously, after admission they were treated with the minimum effective dose of Sacubitril/Valsartan according to their blood pressure reading. Baseline clinical data were recorded and patients were followed up at 1, 3, 6, 9, and 12 months post discharge, during which time the dose of Sacubitril/Valsartan was gradually increased to the maximum tolerated dose (dose range 25-200 mg/twice daily). During follow-up, N-terminal pro-brain natriuretic peptide (NT-proBNP), left ventricular ejection fraction (LVEF), left ventricular end diastolic diameter (LVEDD), left ventricular end systolic diameter (LVESD), and left atrium diameter (LAD) were monitored; a 6-minute walking test and Kansas City Cardiomyopathy Questionnaire (KCCQ) scores were recorded; and adverse reactions were collected. Results: Over the course of the 12-month follow-up, the plasma concentrations of NT-proBNP were significantly reduced compared with the baseline, and the longer the follow-up time, the lower the NT-proBNP levels were (P<0.05). Similarly, LVEDD, LVESD and LAD were significantly smaller at 12 months than at baseline, and the longer the follow-up time, the smaller the internal diameter was (P<0.05). The LVEF, 6-minute walking distance and KCCQ scores increased significantly from baseline (P<0.05), whereas eGFR and serum potassium levels showed no significant change compared with the baseline. Conclusions: Sacubitril/Valsartan demonstrated a remarkable ability to improve cardiac function and to control cardiac remodeling with a high degree of safety in patients with HFrEF.