As a medical professional with expertise in cardiology, I can explain that a fatal arrhythmia is a serious and potentially life-threatening condition where the heart's rhythm is disrupted. This disruption can cause the heart to beat too fast, too slow, or irregularly, which can prevent it from pumping blood effectively. If not treated promptly, a fatal arrhythmia can lead to cardiac arrest and death. Arrhythmias can be caused by various factors, including heart disease, electrolyte imbalances, certain medications, and even stress. The most dangerous types of arrhythmias are ventricular fibrillation and pulseless ventricular tachycardia, as they can quickly lead to a sudden cardiac arrest. Immediate medical attention is crucial for anyone experiencing symptoms of a potentially fatal arrhythmia, which may include chest pain, shortness of breath, dizziness, or fainting. Treatment options can vary and may include medications, electrical cardioversion, or the implantation of a defibrillator to help regulate the heart's rhythm. read more >>

Most sudden cardiac deaths are caused by abnormal heart rhythms called arrhythmias. The most common life-threatening arrhythmia is ventricular fibrillation, which is an erratic, disorganized firing of impulses from the ventricles (the heart's lower chambers).read more >>