Abstract
Heart failure with preserved ejection fraction mainly affects the elderly. The obesity phenotype of heart failure with preserved ejection fraction reflects the coexistence of two highly prevalent conditions in the elderly. Obesity may also lead to heart failure with preserved ejection fraction in middle-aged persons, especially in African American women. Obesity is twice as common in middle-aged than in elderly persons with heart failure with preserved ejection fraction. Obese middle-aged persons with heart failure with preserved ejection fraction are less likely to be Caucasian and to have atrial fibrillation or chronic kidney disease as comorbidities than elderly patients with heart failure with preserved ejection fraction. Obesity-associated low-grade systemic inflammation may induce/heighten inflammatory activation of the coronary microvascular endothelium, leading to cardiomyocyte hypertrophy/ stiffness, myocardial fibrosis, and left ventricular diastolic dysfunction. Both substantial weight reduction with bariatric surgery and lesser levels of weight reduction with caloric restriction are promising therapeutic approaches to obesity-induced heart failure with preserved ejection fraction.
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