This patient support community is for discussions relating to angina, angioplasty, arrhythmia, bypass surgery, cardiomyopathy, coronary artery disease, defibrillator, heart attack, heart disease, high blood pressure, mitral valve, pacemaker, PAD, stenosis, and stress tests.
As far as how successful certain therapies will be, only the doctors caring for your dad will know this for sure - there's know way of knowing otherwise.
I'm sending good thoughts your way. I know what it's like being in your shoes, worrying about my dad's health after hearing stuff like this. My dad had emergency open heart surgery, so it was quite a rollercoaster for us. Ten years later he is doing very well, so I hope that is some encouragement for you :)