Final answer:
Cardioversion is the recommended treatment for atrial fibrillation with rapid ventricular response (RVR) and hemodynamic instability.
Step-by-step explanation:
The recommended treatment for atrial fibrillation with rapid ventricular response (RVR) and hemodynamic instability is cardioversion. Cardioversion is a medical procedure that uses electric shocks to restore the heart's normal rhythm. It is the most effective intervention for patients who are hemodynamically unstable.