Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...
A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...
Defibrillators, long associated with older individuals, are now being implanted in some children. "A defibrillator has the potential to detect chaotic heart rhythms and shock the heart." explained Dr.