Heart failure with preserved ejection fraction is characterized by dynamic impairment of active relaxation and contraction of the left ventricle on exercise and associated with myocardial energy deficiency. (Journal of the American College of Cardiology, 2009)

(untitled) - Phan, T; Abozguia, K; Nallur Shivu, G; Mahadevan, G; Ahmed, I; Williams, L; Dwivedi, G; Patel, K; Steendijk, P; Ashrafian, H; Henning, A; Frenneaux, M