When I stand up, my heart rate jumps up to the 150s. It's been doing that for years no matter what change I make to my level of activity. However, lately, I've been having the strangest palpitations. Usually, my heart would just skip a beat here and there and then continue about it's normal rhythm. One night, on my way back to bed after making a middle-of-the-night trip to the bathroom, I started having palpitations like I often do, but they didn't stop. My heart sped up because I was up moving around, but after it skipped the first beat, it was having a hard time picking back up the 150ish rhythm. It would beat fast a few times, then seem like it would skip anywhere from one to a few beats(up to a couple of seconds with no actual heartbeat), then beat fast a couple more times, then more skipped beats, then back to the quick rate. I laid back down and continued to monitor my pulse for a minute or so. Finally, I just said 'whatever, if I die, I die', and went back to sleep. It wasn't happening when I woke up, but it has happened a few times since then. Not continuously, but the prolonged 'skipped beats'. My resting heart rate in 2014 was around 50bpm. I was deferred from plasma donation once because my heart rate was in the low 40s. (my current normal RHR is 90s -100s). So I know what a slow pulse feels like. This was like it just stopped. Just gave up, and then was like, "Oh yeah. I'm a heart. I should probably beat." Each time I've noticed it, I've been completely calm, no anxiety.. (my body has been betraying me for years) I don't think it's a medication reaction because it's so random. I could be reading, or taking a shower, or getting up in the middle of the night to go pee. It's so very random. I just want to know what it's called so I can look into it more. I've told my doctor, and we're working on figuring it out, but I'd like to do my own research in the meantime. But of course, there aren't many ways to narrow down the results on Google, and there are a LOT of different types of heart issues. Halp!