brenda
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        i would like ot have any information on the weakening of the heart muscles. my father had a heart attact almost 20 years a go and has had 2 qudrople by-pass surgerys sense the heart  attack. his doctor is telling him now his heart muscles are getting weaker. please send any information.    thank you