Hello Thanks for sharing your concern.. I understand that he has been diagnosed with Cardiomyopathy. However it would have easier for me to talk about his prognosis (future health), if I had known his age, whether he had a heart attack before, what kind of therapy he is currently receiving, and any specific cause identified for the cardiomyopathy. These will have a strong bearing on how long he continues to live. I hope he is receiving the best possible medical therapy which will include drugs like ACE inhibitors/Angiotensin receptor blockers, beta blockers, aldosterone antagonists as these are known to prolong life in these patients. However the specific choice of drugs will depend on his history and other findings that are picked up by your treating physician. Besdies medication there are even device therapies like the implantable cardioverter defibrillator or the left ventricular assist device which have clearly shown to increase life span of the cardiomyopathy if the patient is fit to receive them. You can check with your cardiologist about this.