fibrillation is an asynchronous contraction of cardiac muscl

fibrillation is an asynchronous contraction of cardiac muscle fibers. is atrial fibrillation or ventricular fibrillation more serious? explain

Solution

Atrial fibrillation (AF) is an abnormal rhythm of the heart (a type of cardiac arrhythmia) characterized by palpitations and discomfort in the chest region. It is caused due to the generation of atrial ectopic pacemaker firings that are dominated by the firings of SA node. Atrial fibrillation makes the auricles fail to pump blood to the ventricle. It is typically not a lethal condition but needs medical attention.

In ventricular fibrillation also, the rhythm is chaotic, and it results in cardiac arrest. As ventricles pump blood to the heart and all other body organs, ventricular fibrillation is a lethal condition.