My daughter who is 40 passed out unexpectedly on 12/30 and suffered a concussion. She was put on a heart monitor and her heart rate was sometimes very low 55 or high 180 and thes fluctuations occured when she was driving or sitting at work. She subsequently had a tilt table test and fainted in 3 minutes and 20 seconds. Her heart rate dropped to 50 and blood pressure dropped as well. During the treadmill test her heart rate increased along with her blood pressure as speed was increased. They said...