Cardiac Arrest

Cardiac arrest is a sudden and severe medical emergency where the heart abruptly stops beating, leading to a halt in blood flow to the brain and other vital organs. It differs from a heart attack, which involves a blockage in the arteries that supply blood to the heart. In cardiac arrest, the heart’s electrical system malfunctions, causing an abnormal heart rhythm (arrhythmia), often ventricular fibrillation or asystole.