Cardiac arrest is a sudden and life-threatening condition where the heart unexpectedly stops beating, preventing blood from being pumped to the brain, lungs, and other organs. It is often caused by an electrical disturbance in the heart, such as ventricular fibrillation or arrhythmia, and can result from conditions like heart attack, cardiomyopathy, or severe electrolyte imbalances. Symptoms include sudden collapse, loss of consciousness, and absence of breathing or a pulse. Immediate medical intervention, including cardiopulmonary resuscitation (CPR) and the use of a defibrillator, is critical to restore heart function and prevent fatal outcomes. #heart #hearthealth #cardiacarrest