Cardiac arrest

[Kai]

A very serious [medical emergency], where the circulation of the blood stops due to your heart stopping. This lack of oxygen being pumped through vital organs such as the brain through the blood cells results in loss of consciousness.
If left too long to be treated, the person suffering caridac arrest will soon die. Immediate treatment usually results in a recovery. Such treatment includes [CPR] and Defibrillation.
Symptoms can include fatigue, breathlessness, [fainting] and a nearly undetectable pulse.

[Couch Potatoe]

Cardiac arrest is what happens when a person dies. The heart stops pumping blood and oxygen to the organs, brain, and tissues. Sometimes a person can be revived during the first several minutes after cardiac arrest. However, the more time that passes, the less likely it is that the person can be revived and, if revived, the more likely it is that the person will have suffered brain damage.
Brain damage is likely if cardiac arrest lasts for more than 5 minutes, and death is likely if cardiac arrest lasts for more than 8 minutes. Thus, first aid for cardiac arrest should proceed as quickly as possible.
Cardiac arrest can be caused by anything that causes death. One common cause, especially in adults, is an abnormal heart rhythm (arrhythmia). Another possible cause is stopping breathing, such as when a person drowns or has severe pneumonia.
A person in cardiac arrest lies motionless without breathing and does not respond to questions or to stimulation, such as shaking.

[exinilu]

a condition in which the heart stops beating