Means and methods for using non-excitatory electrical heart failure therapy as a therapy for heart failure with preserved ejection fraction

A method of treating a patient with non-excitatory electrical heart failure therapy, the method comprising:

• a. identifying a patient that suffers of heart failure (HF) and presents pulmonary capillary wedge pressure indexed to cardiac output (PCWP/CO) slope greater than 2 mm Hg/L/min;
• b. implanting an implantable cardiac electrical stimulation device;
• c. providing an effective amount of non-excitatory electrical heart failure therapy using said implantable cardiac electrical stimulation device;
• wherein said providing is at least until said HF patient presents a reduction in said PCWP/CO slope and uses said PCWP/CO slope as a target for therapy.