|Synonyms||cardiopulmonary arrest, circulatory arrest, sudden cardiac arrest (SCA), sudden cardiac death (SCD) |
|Classification and external resources|
Cardiac arrest is a sudden stop in effective
The most common cause of cardiac arrest is
Prevention includes not smoking, physical activity, and maintaining a healthy weight.
 Treatment for cardiac arrest is immediate
Cardiac arrest is sometimes preceded by certain symptoms such as fainting, fatigue, blackouts, dizziness, chest pain, shortness of breath, weakness, and vomiting.  The arrest may also occur with no warning.
When the arrest occurs, the most obvious sign of its occurrence will be the lack of a palpable pulse in the person experiencing it (since the heart has ceased to contract, the usual indications of its contraction such as a pulse will no longer be detectable). Certain types of prompt intervention can often reverse a cardiac arrest, but without such intervention the event will almost always lead to death.  In certain cases, it is an expected outcome of a serious illness where death is expected. 
Also, as a result of inadequate