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My good friend suffers from premature ventricular fibrillation. I honestly don’t understand what it means. I know just that she has arrhythmias very often, but she never had anything more serious that that. I would like to hear some explanation about this.

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Ventricular fibrillation is a rapid, ventricular arrhythmia that immediately brings to a halt all meaningful ventricular contractions. Blood immediately stops flowing, and loss of consciousness occurs within seconds. As a general rule, VF doesn’t occur in patients without underlying cardiac disease. For people who have underlying cardiac disease. In general, the worse the left ventricular function, the higher the risk of developing life-threatening ventricular tachycardias. Of course there are exceptions to this general rule.
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