In North America and Europe, PAE is usually performed on an outpatient basis and most patients (89%) of these reports were discharged from the hospital on the day of the procedure [1–11]. According to PAE study protocol approved by the authors’ hospital review boards [12–16], the patients were suggested to stay in the hospital for 1–3 days for observation after PAE to evaluate for possible complications. If the patients had comorbidities or significant complications after PAE, they should stay in the hospital for a longer time.