For patients living with heart failure and other health conditions, blood draws and diagnostic tests are commonplace in order to evaluate their condition. Often, though, chemical or physiologic changes silently cause damage that is not detected until much later. But what if in the future a tiny device, one the size of a nickel or significantly smaller, could be implanted in the patient to monitor and detect abnormalities, and could then relay data to physicians, or provide therapy on the spot, in real time? It may sound like science fiction, but this concept is moving toward reality at Physiologic Communications...