Effects of sacubitril/valsartan on clinical symptoms, echocardiographic parameters, and outcomes in HFrEF and HFmrEF patients with coronary heart disease and chronic kidney disease

Objective To compare the effects of Angiotensin Receptor-Neprilysin inhibitor (ARNI) on the clinical symptoms, echocardiographic parameters, and outcomes (cardiovascular death and hospitalization) in heart failure with reduced ejection fraction (HFrEF) and heart failure with mid-range ejection fraction (HFmrEF) patients with coronary heart disease and chronic kidney disease.Method A retrospective observational study was conducted from January 2018 to May 2019, with a follow-up period of 95.4 ± 57.8 days (8 months). Data from 127 patients were included.Results A statistically significant increase of 68.8% was observed in left ventricular ejection fraction (LVEF) in HFrEF patients compared to that in HFmrEF patients, with an increase of 27.2% at 8 months of follow-up. Sacubitril/valsartan significantly reduced left ventricular end-systolic volumes (LVESV) in HFrEF patients unlike in HFmrEF patients. The decrease in LVESV was 28.8% in HFrEF patients and 17.1% in HFmrEF patients. A significant reduction in the prevalence of severe secondary mitral regurgitation (EROA > 0.4 cm2) was observed in HFrEF compared to that in HFmrEF patients with the use of sacubitril/valsartan. A reduction of 15.6% was observed in HFrEF patients, whereas a reduction of 7.1% was observed in HFmrEF patients. Improvement in functional classification (NYHA) was observed during follow-up. The prevalence of (NYHA III) reduced from 50% to 15.7% in HFrEF patients, whereas a reduction from 21.1% to 8.8% was observed in HFmrEF patients. There was a significant reduction in NT-proBNP in HFrEF patients compared to that in HFmrEF patients. A reduction of 52% was observed in HFrEF patients, whereas a reduction of 28.7% was observed in HFmrEF pateints. Sacubitril/valsartan reduced primary endpoint events in both groups. The prevalence of HF-related hospitalization was higher in HFrEF than in HFmrEF patients: 12.1% vs 7.5%, respectively. The prevalence of CV death in HFrEF vs HFmrEF patients was 3.7% vs 0.5%, respectively. Cardiovascular (CV) death was higher in patients with atrial fibrillation in both groups.Conclusion Sacubitril/valsartan significantly improved morphofunctional remodeling parameters and clinical symptoms in HFrEF patients than in HFmrEF patients.