Assertion: refractory ventricular fibrillation | /r/HasProperty | rvf
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text: In the United States 424,000 out of hospital cardiac arrests occur per year with a 10.4% overall survival rate.1 Refractory Ventricular Fibrillation (RVF) is a complication of cardiac arrest and has varying definitions in the literature but is commonly defined as ventricular fibrillation that does not respond to, or resists, three or more defibrillation attempts.2,3Although the estimated incidence of refractory ventricular fibrillation is 0.5-0.6 per 100,000 of the population, some authors report that 10-25% of cardiac arrest cases could develop RVF or recurrent VF.3-5 Patients who experience RVF during their cardiac arrest have a mortality of up to 97%.6,7 Several case reports have shown success with excellent neurologic outcomes in terminating RVF using dual defibrillation after failure of traditional Advance Cardiac Life Support (ACLS)