Why does the heart go into ventricular fibrillation?

ECG features of ventricular fibrillation The ECG shows irregular waves with varying morphology and amplitude . No P-wave, QRS complex or T-wave can be seen. This is pathognomonic (unique) to ventricular fibrillation and must not be confused with any other arrhythmia.

During VF, ventricular activation is so rapid and chaotic that the myocardium only trembles without any coordinated contraction. As a result, cardiac output is absent , and death occurs.

Atrial fibrillation occurs in the heart’s upper two chambers, also known as the atria. Ventricular fibrillation occurs in the heart’s lower two chambers, known as the ventricles.

Ventricular fibrillation happens when the electrical signals in your heart go haywire . This causes a ventricle to quiver (fibrillate) instead of pumping blood through your body. Without medical treatment right away, V-fib can be deadly. In fact, it’s the most common cause of sudden cardiac death.24 Tem 2020