Changes

'''Cardiac arrest''' occurs when the [[heart]] develops an [[arrhythmia]] that causes it to stop beating. This is different than a heart attack, where the heart usually continues to beat but blood flow to the heart is blocked.

'''Cardiac arrest''' occurs when the [[heart]] develops an [[arrhythmia]] that causes it to stop beating. This is different than a heart attack, where the heart usually continues to beat but blood flow to the heart is blocked.

There are many possible causes of cardiac arrest. They include coronary heart disease, heart attack, electrocution, drowning, or choking.  

There are many possible causes of cardiac arrest. They include coronary [[heart disease]], [[heart attack]], [[electrocution]], drowning, or choking.  

Without medical attention, the person will die within a few minutes. People are less likely to die if they have early cardiopulmonary resuscitation (CPR) and [[defibrillation]].<ref>http://www.nlm.nih.gov/medlineplus/cardiacarrest.html</ref>

Without medical attention, the person will die within a few minutes. People are less likely to die if they have early [[cardiopulmonary resuscitation]] (CPR) and [[defibrillation]].<ref>http://www.nlm.nih.gov/medlineplus/cardiacarrest.html</ref>

==References==

==References==