Ventricular fibrillation occurs when the ventricles of the heart quiver due to uncoordinated contractions of the heart muscle fibers. This prevents the heart from effectively pumping blood throughout the body. Ventricular fibrillation can be caused by stress, damage, or electrical changes to heart tissue. It requires immediate treatment through defibrillation or medications to prevent organ damage or death from lack of oxygen.

1. VENTRICULAR FIBRILLATION

2. Introduction
• Fibrillation : It is the quivering
due to uncoordinated muscle
fiber contraction
• Ventricular : Refers to the
bottom chambers of the heart

3. VFIB
• Ventricular fibrillation(Vfib or Vf): this
means that the ventricular muscles are
not contracting at the same time (in
syncytium or in homogeneity)
• The force required to pump blood
throughout the entire body is greatly
diminished as a result of VFIB

6. Causes of Vfib
• This could be due to stress or
damage of cardiac tissue that
causes this tissue to become
structurally or electrically
changed. This is known as tissue
heterogeneity

7. Cause of tissue heterogeneity
• 1. Medications and elicit drugs
• 2. Electrolyte imbalance
• 3. Ischemia
• 4. Scar tissue from heart attack
• 5. External electrical stimulation
• 6. Premature ventricular contraction (PVC)
• 7.Functional and anatomical reentry

9. Treatment
• Defibrillation by energy shock
• Implantable cardioverter defibrillator (ICD)
• Medications after event to help reduce the
possibility of recurrence in the future

10. Conclusion
• Vfib is life threatening because major organs
in the human system are greatly dependent
on the oxygen and nutrients the blood
supplies. Organs such as the brain and heart
cannot stand oxygen deprivation for very long.
• People who have this attacks tend to fall
unconscious fast and require immediate
medical attention