Sudden cardiac arrest (SCA) is a condition in which the heart suddenly and unexpectedly stops beating. In some cases, this situation is reversible. when cardiac failure leads to death, it is called sudden cardiac death (SCD), a sudden, unexpected death caused by loss of heart function (sudden cardiac arrest).
Cardiac arrest is a vital risk that requires immediate medical attention. It is more frequent in persons over age 35 and having a coronary illness. The most frequent cause is malignant arrhythmia (ventricular fibrillation) or a heart attack, causing the heart to stop beating. When this happens, blood stops flowing to the brain and other vital organs leading to abrupt loss of consciousness (syncope) and death within minutes. Although the causes behind cardiac arrest are unknown, it is known that tobacco, stress and obesity are linked to the illness. It can also be triggered by:
- Coronary disease : the majority of persons (80%) who have suffered a cardiac arrest have had ischemic heart disease
- Severe heart attack
- Cardiomyopathy (illnesses that affect the heart muscle)
- Severe lack of oxygen