is, for lack of a better word, sudden death. A person in cardiac arrest will collapse and stop breathing normally and should receive cardiopulmonary resuscitation (CPR) immediately.
Cardiac arrest results for a number of reasons and your heart stops. The blood stops flowing through your veins and most importantly your brain stops receiving oxygen.
Cardiac arrest can be a result of a heart attack, which is actually a heart condition and not as many would think a cardiac arrest (sudden death). Cardiac arrest can result from drowning, drug overdose, massive trauma such as a car crash or a number of different medical conditions.
Cardiac arrest does not discriminate, it can happen to a 2-year old drowning victim, a healthy and fit prospective 23-year old athlete on a sports field, a hard working 50-year old mum or a 75-year old teacher enjoying his retirement years.