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Causes of Exercise Intolerance in Heart Failure With Preserved Ejection Fraction: Searching for Consensus

2014; Elsevier BV; Volume: 20; Issue: 10 Linguagem: Inglês

10.1016/j.cardfail.2014.07.010

1532-8414

Nicholas Houstis, Gregory D. Lewis,

Cardiac pacing and defibrillation studies

Exercise intolerance is one of the cardinal symptoms of heart failure with preserved ejection fraction (HFpEF). We review its mechanistic basis using evidence from exercise studies. One barrier to a consensus understanding of the pathophysiology is heterogeneity of the patient population. Therefore, we pay special attention to varying study definitions of the disease and their possible impact on the causal factors that are implicated. We then discuss the role of exercise testing and its potential to subtype HFpEF in to more homogeneous mechanism-based subclasses.