32(m) Last August I started feeling a fluttery feeling like butterflies in my chest that would last a few seconds I have felt this before rarely and would cough to make it stop (I have a background in cardiac sonography) never thought anything of it but in August I had one followed by a fast pounding heart rate. Any time I caught it on my watch it was around 150-160 bpm sometimes the coughing didn’t work but eventually would stop after no less than 30ish seconds max 1 minute it’s hard to tell when you have an adrenaline rush thinking (this is it I’m a goner) and have now had 4 episodes since August. Two of them were emotionally elevated moments so I figured this was it. This prompted a 48 hour holter and an echo with a visit to cardiology. Cardiologist didn’t seem concerned at all and suspected a burst of atrial tach, but we never caught one of those episodes on the monitor. The sensations I feel are different than that of PVCs like I recorded on my holter. Echo was completely normal but my holter showed me this seen attached here. My last episode was Nov 5 2025 and got blood work done around then and i had a potassium of 3.6 which is right on the brink of low so I figure I start focusing on consuming more and utilizing electrolytes and figured I had it all figured out until it happened yesterday. Out of the blue chilling in my work chair. Zero reason for it to happen but it did and now my cardiologist team said they won’t do a longer holter unless I take the metoprolol they gave me and have another episode. I took it upon myself to buy a 6L kardia ecg to hopefully catch something the next time it happens. I suspect I may have a run of PACs maybe and then it kicks me into atrial tach or some variant of SVT I’m not sure but it’s frustrating because I’m sure I have health ocd so all I do is fixate on this all day everyday just waiting for it to happen again and that is not a way to live but I’m not sure what else to do right now. I also am a new dad and the thought of something happening to me makes me sick to my stomach.

Palpitations with SVT??