Ok here's what's up. I was working normally and out of nowhere my heart rate shot up to 180 bpm and got dizzy, light headed, chest pain, and blurred vision. Pulse stayed elevated for over 45 min. Was taken to the hospital and nothing showed up. Same thing happened 4 weeks ago and the only thing they found was a troponin level of .06. Had CT scan, ultrasound, and stress test with nothing to show. Any ideas?