What is fatal heart rhythm?

A fatal heart rhythm, often referred to as a lethal arrhythmia, is an abnormal heart rhythm that can lead to sudden cardiac arrest and death if not treated promptly. Common types include ventricular fibrillation, where the heart's electrical activity becomes chaotic, preventing effective pumping of blood, and ventricular tachycardia, which can also disrupt normal heart function. These conditions require immediate medical intervention, such as defibrillation, to restore a normal heartbeat and prevent fatal outcomes.