Relias Dysrhythmia Basic A Practice Test 2026 – Comprehensive Exam Prep

The most effective and immediate treatment for ventricular fibrillation, a life-threatening cardiac rhythm characterized by uncoordinated heart muscle activity, is defibrillation. Defibrillation involves delivering a controlled electric shock to the heart to restore a normal rhythm. This is critical because ventricular fibrillation prevents the heart from effectively pumping blood, leading to loss of consciousness and, if not treated quickly, can result in death.

Other choices listed, while relevant in the context of cardiovascular emergencies, are not used as the primary intervention for acute ventricular fibrillation. For instance, cardiac catheterization is a technique primarily used for diagnosing and treating blockages in coronary arteries but is not an acute treatment for ventricular fibrillation. Amiodarone is an antiarrhythmic medication that may be used in the post-defibrillation phase or for certain arrhythmias, but it is not the first-line treatment in acute situations of ventricular fibrillation. Adenosine is typically used for certain types of supraventricular tachycardias but is ineffective in the context of ventricular fibrillation.

In summary, defibrillation is crucial for the immediate management of ventricular fibrillation as it aims to deliver a shock to reset the heart's electrical system, making it the correct answer for