Can anyone with more knowledge tell me more information. My DF had a heart attack around 5 years ago , he has heart failure as a result . He has had fluid round his lungs and now has AFIB. Doctors said his heart is weakening He tries to stay fit and active, I went with him shopping and he seems fine very mobile trying to help me lift things. He's 59, I'm so frightened I'm going to lose my Dad early he seems so young 😥😥. I'm hoping for so much more time with him.