text: Antiarrhythmic agents like amiodarone or lidocaine can help , but , unlike atrial fibrillation , ventricular fibrillation rarely reverses spontaneously in large adult mammals .
simplified: Antiarrhythmic agents such as amiodarone or lidocaine can help , but , unlike atrial fibrillation , ventricular fibrillation rarely reverses spontaneously in large adult mammals .