A patient presents to the emergency department with the following clinical signs:
Pulse: 132 beats/min
Blood pressure: 88/50 mm Hg
Respiratory rate: 32 breaths/min
Temperature: 104.8°F
Chest x-ray: Findings consistent with congestive heart failure
Cardiac rhythm: Atrial fibrillation with rapid ventricular response
These signs are consistent with which disorder?
Select one of the following: