Hi doctor, Last night during sleep, I was awoken by a violent diaphragm convulsion. I felt a sensation of being drawn down into a cold dark blackness. It was very much disturbing and I felt like I was going to die. I had benign arrhythmias with follow up Holter monitor and stress test revealed no signs of heart disease. It occurred thrice in the last 18 months. Please help.
Hello. Revert back with the answers to a cardiologist online -->