text: Patients with hemodynamic instability should undergo DC cardioversion and<unk>  with parenteral agents to slow the heart rate down.
option_0: Atrial fibrillation urgent treatment
option_1: ST elevation myocardial infarction initial care
option_2: Atrial fibrillation echocardiography or ultrasound
option_3: Sudden cardiac death urgent treatment
option_4: Atrial fibrillation cardiac MRI
option_5: Stress cardiomyopathy echocardiography or ultrasound
option_6: Atrial fibrillation physical examination
option_7: Ventricular fibrillation medical therapy