A Portuguese expert panel position paper on the management of heart failure with preserved ejection fraction - Part I: Pathophysiology, diagnosis and treatment.

Heart failure (HF) with preserved ejection fraction (HFpEF) affects more than 50% of HF patients worldwide, and more than 70% of HF patients aged over 65. This is a complex syndrome with a clinically heterogeneous presentation and a multifactorial pathophysiology, both of which make its diagnosis and treatment challenging. A Portuguese HF expert panel convened to address HFpEF pathophysiology and therapy, as well as appropriate management within the Portuguese context. This initiative resulted in two position papers that examine the most recently published literature in the field. The present Part I includes a review of the HFpEF literature covering pathophysiology, clinical presentation, diagnosis and treatment, including pharmacological and non-pharmacological strategies. Part II, the second paper, addresses the development of a holistic and integrated HFPEF clinical care system within the Portuguese context that is capable of reducing morbidity and mortality and improving patients' functional capacity and quality of life.