Advanced Cardiovascular Life Support (ACLS) Practice Exam

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What is the recommended energy dose for biphasic synchronized cardioversion of atrial fibrillation?

50 to 100 J
120 to 200 J
200 to 300 J
300 to 360 J

The correct answer is: 120 to 200 J

The recommended energy dose for biphasic synchronized cardioversion of atrial fibrillation is 120 to 200 joules. This range is based on clinical studies that demonstrate effective conversion of atrial fibrillation to normal sinus rhythm while minimizing potential risks associated with higher energy levels. Biphasic defibrillators are designed to deliver shocks in two phases, which increases the likelihood of successful conversion with lower energy levels compared to monophasic defibrillators. The 120 to 200 J range specifically targets optimal efficacy for atrial fibrillation, balancing successful defibrillation with the overall safety of the procedure. Higher energy doses may lead to increased side effects and complications without necessarily improving success rates. Utilizing this correct energy dose is crucial for healthcare providers when managing patients with atrial fibrillation to ensure both efficacy and safety during the cardioversion process.