Well let me start with thanking everyone who has taken the time to respond so far. Now to try an answer everyone and everything. At this point i don't have devices. My previous doctor had put me on the life vest for about 2-3 weeks after my second HA. I went for a follow up echo and he said i made it past the ef needed to require it and to send it back and that he would see me in a year even though i was still having problems. So i found the doctor i have now and he said that he would have left it on me for a while longer and a week later i had my 3rd HA. They added another stent and sent me on my way. Have continued to have pain and "palpitations" since. I went back to the ER about a month ago cause they were getting worse, they kept me overnight and did a test i hadn't had before and said they saw the dead spot that the echo had missed. About a week later they had me go for the viability scan (the report is the attached picture) which i was told i was in heart failure and that there was nothing he could do for me but give me a new medication called Entresto which he said might help improve my numbers but that if after a few months it didn't we might discuss the life vest again. But i have read that anything under an ef of 30 is considered high risk for "sudden cardiac death". Topped with these "palpitations" which at times get weird, like it's beat.... beat...beat...beatbeatbeatbeat................beat...beat.....beatbeatbeatbeatbeatbeatbeat............................................beat............beat and then back to normal.So i was told by the last er doctor to seek out mayo or cleavland (mayo being closer to me) i sent the request and all the history. They set my appointment 3+ weeks out cause my doctor has to put in a referral or my insurance wont cover it. Otherwise i'm sure they would have gotten me earlier. I know this was long and i'm sorry and hopefully i answered everything so far. If i missed something feel free to ask again and i'll be more then happy to answer