How long does someone have to say hospitalized after cardioversion?

Usually few hours: If it is elective cardioversion, you can go home as early as 1-2 hours.

2 hours: We often monitor the patient for a brief period to make sure they are stable and then discharge them home quickly. Assuming that the cardioversion was elective of course.

Out patient: Elective cardioversion is an out pt procedure. The anesthesia is the rate limiting step. If pts recover as expected then pts are discharged a couple of hrs after the cardioversion.