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 ...
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How defibrillators really work, explained with science
Understand how defibrillators work to restart the human heart.
LANSING — A new type of heart defibrillator was implanted for the first time in Michigan during a December procedure at E.W. Sparrow Hospital. The device is able to give a more normal life to people ...
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