Should we target obesity in advanced heart failure?

Area of Science:

• Cardiology
• Metabolic Disorders
• Public Health

Background:

• Obesity is a significant risk factor for developing heart failure (HF).
• Paradoxically, obesity has been linked to improved survival rates in patients already diagnosed with HF.
• Current clinical guidelines offer clear recommendations for extreme ends of the obesity-HF spectrum.

Purpose of the Study:

• To delineate management strategies for obesity in the context of heart failure.
• To clarify recommendations for weight management in individuals with varying degrees of obesity and cardiac conditions.
• To guide clinical decision-making for patients with overweight or obesity and heart failure.

Main Methods:

• This is an opinion statement based on current clinical understanding and literature review.
• It synthesizes evidence regarding the relationship between body mass index (BMI) and heart failure outcomes.
• It outlines clinical scenarios and corresponding management approaches.

Main Results:

• Weight loss is recommended for obese individuals without cardiac pathology to prevent cardiomyopathy.
• Morbidly obese patients (<50 years, BMI ≥ 40 kg/m2) with severe systolic dysfunction and NYHA class III-IV symptoms may benefit from malabsorptive bariatric surgery.
• For overweight and mildly obese HF patients (BMI 25-35 kg/m2), weight loss may not improve survival but could offer symptomatic benefits.

Conclusions:

• Management strategies for obesity in heart failure vary based on BMI, age, and cardiac function.
• Bariatric surgery is a consideration for select morbidly obese patients with advanced heart failure.
• Further research is needed to refine recommendations for intermediate BMI ranges in HF patients.