I have had heart failure for sometime. I have had two stem cell trials tested on me with little to no help. My EF is 25. I recently tried a new approved device and I am only the second person in south Florida to have put in me. It is a device like a defibrillator put in my right part of my chest, which has two lead wires put in my ventricle shooting electricity to my heart to help it pump better. I do feel better and my shortness of breath has greatly improved. Not sure it is for everyone but it takes several months to show improvement. The name of the company is Impulse Dynamic… known as a CCM heart device.