A Time lapse I was recording when my svt hit while at football practice. It started about the time you see me first cough. Lasted from about 620 pm until 730pm eastern us. Heart rate was between 240 and 260 on average during this time. I went to the ER, was administered Adenosine which brought me back down to an 80 he. I stopped recording so I could walk over to the front of the field and call 911 and be near people in case I went out.