Background: long time athlete, use caffeine pills frequently, also use kratom frequently for studying/focus. Kratom is now being linked to damaging the potassium channels in the heart and causing a prolonged QT.
Last night I had some (not a lot) of caffeine earlier at 5pm. Around 7:30 I took Kratom and took a little extra by accident. Around 40 minutes later my heart rate skyrocketed and I felt like I was going to pass out. I popped a little magnesium and potassium then made my way to an urgent care (30 minute drive) to have an EKG done. The EKG showed sinus tachy at 117 and also prolonged QTc at 441. They recommended the ER.
I went to the ER, repeat EKG was done & blood drawn/urine done. Everything was negative including cardiac enzymes but the EKG showed tachy at 120 and QTc at 462 although it did say borderline ekg. They didn't seem concerned about the EKG overall.
I was given a beta blocker and benzo to bring my BP/HR down which it worked. Now the next morning I feel anxious still was HR is high 80s low 90s. I am an anxious person which contributes to the vitals but the episode was very odd overall...
I have a normal EKG from 2-3 months ago but I'm still very concerned about the prolonged QTc and want some input if possible.