AFib with Rapid Ventricular Rate (RVR) \u2013 Rate >110 Primary AFib \u2013 Patients symptoms or their hemodynamic instability is due to the AFib itself. Treatment is by rate or rhythm control. Secondary AFib \u2013 Patients AFib rate or their hemodynamic instability is due to an underlying secondary process (eg thyrotoxicosis, PE, sepsis, drugs, etc). Treatment [\u2026]