@tomandpatti Nope, never a guarantee.....regrettably. However, you can up your odds, assuming your case isn't exceedingly complex and quite beyond the mere mortal EP out there, by seeking and enlisting the help of the very best EPs that money can buy. If you're well covered financially, and can stand being in line for three-six months until one of them can take you on, your chances of either being told your case is quite beyond modern medical practice and science, or that you require special care but are quite probably going to be better off, are high with the ten best EPs. I can offer the names of two I know of, but beyond that, it really is most often the skill and experience of the EP in question that matters most for patient outcomes.