The treatment of choice in diagnosed ventricular fibrillation is
**Core Concept**
The treatment of choice in diagnosed ventricular fibrillation is immediate restoration of a viable cardiac rhythm through electrical cardioversion or defibrillation. This is a medical emergency requiring prompt intervention to prevent death.
**Why the Correct Answer is Right**
The correct answer is defibrillation, which involves delivering a controlled electrical shock to the heart to convert the abnormal rhythm back to a normal sinus rhythm. Defibrillation works by depolarizing the entire heart muscle simultaneously, allowing the heart to re-establish a coordinated rhythm. This is achieved through the use of an Automated External Defibrillator (AED) or a manual defibrillator in a hospital setting.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not address the urgent need for electrical cardioversion or defibrillation in ventricular fibrillation.
**Option B:** This option is incorrect as it is a treatment for acute myocardial infarction, not ventricular fibrillation.
**Option C:** This option is incorrect as it does not provide a definitive treatment for ventricular fibrillation.
**Clinical Pearl / High-Yield Fact**
In cardiac arrest situations, the American Heart Association (AHA) guidelines recommend a sequence of steps: CPR, defibrillation, and then epinephrine administration. Prompt recognition and treatment of ventricular fibrillation are crucial to improve survival rates.
**Correct Answer: D. Defibrillation.