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Author Spotlight: Investigating HR-Dependent Cardiac Function in Mouse Models Through a Novel Atrial-Pacing Approach
Published on: July 21, 2023
Heart failure
Marco Metra1, John R Teerlink2
1Institute of Cardiology, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy.
Insights
Heart failure treatments are improving, with new drugs like angiotensin receptor neprilysin inhibitors (ARNIs) showing promise. However, effective therapies for heart failure with preserved ejection fraction remain elusive, highlighting an unmet clinical need.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Heart failure (HF) is a global health concern with increasing prevalence due to population aging and improved acute cardiovascular event management.
- While therapies exist for heart failure with reduced ejection fraction (HFrEF), such as ACE inhibitors, ARBs, beta-blockers, and ARNIs, significant unmet needs persist, particularly for heart failure with preserved ejection fraction (HFpEF).
Purpose of the Study:
- To review current therapeutic strategies for heart failure, focusing on advancements and remaining challenges.
- To highlight the evolving role of therapies like ARNIs and left ventricular assist devices (LVADs).
- To discuss the limited treatment options for HFpEF and the need for novel therapeutic approaches.
Main Methods:
- Review of current literature on heart failure epidemiology, pathophysiology, and treatment efficacy.
- Analysis of guideline recommendations for pharmacologic and device-based therapies.
- Examination of ongoing research into novel drug mechanisms for HFrEF and HFpEF.
Main Results:
- Angiotensin receptor neprilysin inhibitors (ARNIs) demonstrate improved outcomes compared to enalapril, leading to guideline recommendations for their use in HFrEF.
- Left ventricular assist devices (LVADs) are increasingly utilized in severe HF due to improved safety.
- No definitive therapy has emerged for HFpEF, despite some evidence for spironolactone.
Conclusions:
- While advancements in HFrEF treatment, including ARNIs and LVADs, are improving patient outcomes, HFpEF remains a therapeutic challenge.
- Novel drug development, including cardiac myosin activators, is crucial for addressing the unmet needs in both HFrEF and HFpEF.
- Continued research is essential to develop effective treatments for the growing population affected by heart failure.
Abstract:
Heart failure is common in adults, accounting for substantial morbidity and mortality worldwide. Its prevalence is increasing because of ageing of the population and improved treatment of acute cardiovascular events, despite the efficacy of many therapies for patients with heart failure with reduced ejection fraction, such as angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), β blockers, and mineralocorticoid receptor antagonists, and advanced device therapies. Combined angiotensin receptor blocker neprilysin inhibitors (ARNIs) have been associated with improvements in hospital admissions and mortality from heart failure compared with enalapril, and guidelines now recommend substitution of ACE inhibitors or ARBs with ARNIs in appropriate patients. Improved safety of left ventricular assist devices means that these are becoming more commonly used in patients with severe symptoms. Antidiabetic therapies might further improve outcomes in patients with heart failure. New drugs with novel mechanisms of action, such as cardiac myosin activators, are under investigation for patients with heart failure with reduced left ventricular ejection fraction. Heart failure with preserved ejection fraction is a heterogeneous disorder that remains incompletely understood and will continue to increase in prevalence with the ageing population. Although some data suggest that spironolactone might improve outcomes in these patients, no therapy has conclusively shown a significant effect. Hopefully, future studies will address these unmet needs for patients with heart failure. Admissions for acute heart failure continue to increase but, to date, no new therapies have improved clinical outcomes.
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Pathophysiology of Heart Failure
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