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The regular heartbeats are required.

  Key words: Beat, Cardiovascular, Heart, Heartbeat, Heart-Beat, Heartbeats  

  Frequently Asked Questions (FAQ's)  

Question: What is cardiac arrest?
  Answer: Cardiac-arrest is when the heart stops beating and can be fatal. - 308

Question: What is a heart beat?
  Answer: A heart beat is the rhythmic contracting and relaxing of the heart muscle to pump blood. - 138

Topics from our world ...

  External related links to the world ...  

American Heart Association
 American Heart Association

 Learn about the American Heart Association's efforts to reduce death caused by cardiovascular disease. - 466
National Heart, Lung and Blood Institute
 National Heart, Lung and Blood Institute

 Heart and vascular diseases, lung diseases, blood diseases and resources. - 467

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