Several factors may increase your risk of ventricular fibrillation, including:

  • A previous episode of ventricular fibrillation
  • A previous heart attack
  • A heart defect you're born with (congenital heart disease)
  • Heart muscle disease (cardiomyopathy)
  • Injuries that cause damage to the heart muscle, such as electrocution
  • Use of illegal drugs, such as cocaine or methamphetamine
Nov. 01, 2011