Ventricular Fibrillation is best described as:

• A. An abnormal cardiac rhythm that prevents the heart from pumping blood
• B. A fast, regular heartbeat that strengthens pumping
• C. A slow rhythm that improves perfusion
• D. A rhythm that results in consistent blood flow

Answer: (A)

Ventricular fibrillation is an abnormal, chaotic rhythm of the heart’s lower chambers that prevents effective pumping. The ventricles quiver with disorganized electrical activity, so they don’t contract in a coordinated way and cannot eject blood. As a result, blood flow to the body and brain stops or becomes extremely poor, making this a life-threatening condition that requires urgent defibrillation and CPR. It is not a fast, regular heartbeat that strengthens pumping, nor a slow rhythm that improves perfusion, nor a rhythm that maintains consistent blood flow—those descriptions would imply some organized, effective pumping, which ventricular fibrillation does not provide.