What dietary interventions have been tested in heart failure with preserved ejection fraction? A systematic scoping review

What services are currently provided to people with heart failure with preserved ejection fraction in the UK, and what are their components? A protocol for a scoping literature review

AIMS

Heart failure (HF) with preserved ejection fraction (HFpEF) is increasing in incidence and is increasingly the most common HF diagnosis. Patients with HFpEF are often excluded from specialist HF services, which has negative impacts on their healthcare experiences and health-related outcomes. As emerging evidence-based treatments are being incorporated into clinical guidelines, it is timely to focus on the management of this phenotype. This review aims to explore literature around care provision for HFpEF in the UK, to characterize and assess HFpEF care pathways against current standards, and to generate evidence to create an optimized framework of care.

METHODS AND RESULTS

A scoping review of the evidence from six databases will be performed, alongside a search of grey literature search and consultation with relevant experts. Given the expected heterogeneity, multiple lines of synthesis are anticipated. Data analysis will follow best practice guidelines for the synthesizing methodologies selected. Patient and public representatives will assist with analysis and in identifying priority components for HFpEF clinical services.

CONCLUSION

This scoping literature review will enable an in-depth examination of the current health service provision for those with HFpEF in the UK. Synthesis of key components of services and illumination of challenges and barriers will inform current and future practice. There is a long history of specialist HF care in the UK, including seminal work on nurse-led care. Therefore, evidence derived from this review will likely be useful to HF services across Europe. The proposed combination of the search across both peer-reviewed literature and grey literature, combined with patient and public involvement, will identify the key components of a framework of care for those with HFpEF.

REGISTRATION

This scoping review protocol was published on the public Open Science Framework platform (no registration reference provided) and can be accessed at: https://osf.io/5gufq/.

Dietary Interventions in Heart Failure With Preserved Ejection Fraction: A Scoping Review

Patients with heart failure with preserved ejection fraction (HFpEF) are burdened by multiple diet-sensitive comorbidities, including obesity and malnutrition. Despite this, a low percentage of patients with HFpEF have been enrolled in dietary intervention trials in heart failure and few dietary interventions have been conducted in HFpEF exclusively. This scoping review will examine available evidence regarding dietary interventions in patients with HFpEF, highlight existing gaps in knowledge, and discuss emerging dietary therapies in this population.

Comprehensive Geriatric Assessment to Optimize the Management of Older Patients With Transthyretin Cardiac Amyloidosis

Transthyretin cardiac amyloidosis (ATTR-CA) predominantly affects older adults with multiple chronic conditions, leading to significant physical, cognitive, and emotional challenges. New disease-modifying drugs are effective in early stages, prompting a shift toward comprehensive assessments, including functional capacity and quality of life. However, these assessments may not fully capture the complexity of older ATTR-CA patients, especially regarding frailty and mood disorders, which can influence symptom reporting. Thus, integrating comprehensive geriatric assessment tools into routine clinical practice may be crucial to detect early signs of frailty or functional impairment that could impact outcomes and mitigate futility and ageism in the decision-making process. This review highlights the importance of evaluating multimorbidity, disability, and frailty in older patients with ATTR-CA to optimize management strategies.

Appetite and its Regulation: Are there Palatable Interventions for Heart Failure?

PURPOSE OF REVIEW

Obesity is a major driver of heart failure (HF) incidence, and aggravates its pathophysiology. We summarized key reported and ongoing randomized clinical trials of appetite regulation and/or dietary energy restriction in individuals with HF.

RECENT FINDINGS

Weight loss can be achieved by structured supervised diet programs with behavioural change, medications, or surgery. The new glucagon-like peptide-1 receptor agonists alone or in combination with other agents (e.g., glucose-dependent insulinotropic polypeptide and glucagon receptor agonists or amylin analogues) potently and sustainably reduce appetite, and, taken together with dietary advice, can produce substantial, life-changing, weight loss approaching that achieved by surgery. To date, data from the STEP-HFpEF trial show meaningful improvements in health status (Kansas City Cardiomyopathy Questionnaire). Effective weight management could relieve several drivers of HF, to complement the existing treatments for HF with both reduced and preserved ejection fraction. Further trials of weight loss interventions will provide more definitive evidence to understand their effects on clinical events in patients with HF.