The main symptom of ventricular fibrillation is losing consciousness and sudden cardiac death.
Another early sign of symptom is ventricular tachycardia, a very rapid, but regular heartbeat of 100 beats or more a minute occurring in the lower chambers (ventricles) of the heart. If ventricular tachycardia is left untreated, it can lead to ventricular fibrillation. Patient with ventricular tachycardia may feel palpitations, chest discomfort/pain, shortness of breath or giddiness.
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