I went out cold in November 2003 -- no warning, no nothing, except for a fleeting feeling I was going to faint. I actually had been feeling "on top of the world." Dx was NCS, and I have struggled with it ever since. I too have very low BP and very slow HR, but then, I have all of my life, and seem to have inherited this from my Dad. My normal BP runs 90/60. When it is 110/70 or 120/80, it is high. Likewise, my resting HR all of my life has been 60 or so. I have also been aware of the arrythmias since I was a child and used to just find them 'amusing.' I've also been told I have a murmur. Lately, as I've gotten older, and since the initial episode, HR runs in the mid 50s, and dips into the 40s. Following surgery in January, my husband watched it dip into the 30s and freaked out. Like you too, I think, 'well hey! I'm walking around.' I did not tolerate midodrine or fluodrocortisone, and while I have nowhere to go with BP and HR, I have had some success with beta blockers -- esp. the extended release types that I take at bedtime. They keep me from feeling lows and highs throughout the day. The concern naturally is b/c beta blockers lower BP and HR too. I left the hospital in 2003 after a week's stay and every test imaginable, wearing a Holter monitor for a month and making phone calls. It gave the cardiologist enough info evidently to want to do an EP study that December, at which time he implanted a continuous loop monitor that lasted until this past Fall. Several arrythmias show up, and I still do best with beta blockers, although his concern is for the bradycardia (slow HR). At this point, I've heard 'pacemaker' twice from two different cardiologists, but I have read such mixed reports and findings. My cardiologist explained to me that what he thinks happens in my case is that 1) my BP drops, 2) the HR slows, and if 3) the arrthmia(s) kick in, then I find myself 'compromised.' Only on a very rare occasion have I ever felt the racing beat and then it was 117 beats or better, off and on all day. I also had a lot of chest tightness and significant aching in my left arm. Another trip to the ER, overnight stay, and now a different cardio is looking for mitral valve prolapse. All of this is enough to drive you crazy. Sorry I went on so. I think I was trying to respond to what sounds a lot like my history these past 2 1/2 years, and I wish you all the best. I will be incredibly happy when they get me back on an even keel as I have felt so 'in limbo' while this all gets sorted through.