Atrial Fibrillation (AFib)
Atrial fibrillation (AFib) is a type of arrhythmia (abnormal heart rhythm) that causes the upper chambers of the heart (the atria) to beat irregularly and too quickly. It is the most common type of serious arrhythmia and affects millions of people around the world. In some cases, AFib can cause serious complications, such as stroke, heart failure, and even death.
Ventricular Fibrillation (VFib)
Ventricular fibrillation (VFib) is a much more serious type of arrhythmia that affects the lower chambers of the heart (the ventricles). VFib is a life-threatening condition that can cause sudden cardiac arrest (SCA). It is caused by an abnormal electrical signal that causes the ventricles to contract rapidly and irregularly. VFib can be caused by a variety of factors, including heart attacks, electrolyte imbalances, and certain medications.
Which fibrillation is worse?
Ventricular fibrillation (VFib) is much more serious and life-threatening than atrial fibrillation (AFib). VFib can cause sudden cardiac arrest (SCA), which can be fatal. AFib can cause serious complications, such as stroke, heart failure, and even death, but it is not usually as serious as VFib. Therefore, VFib is considered to be the more dangerous of the two types of fibrillation.