Discussion
The principal finding of this study is that a SDD strategy after an uncomplicated elective cryoballoon ablation for AF is safe and effective. The patient selection and triage for SDD was different at the three geographically diverse centers, supporting the notion that this strategy is generally safe across a wide variety of physician user habitats and hospital discharge policies. Importantly, none of the complications in the SDD cohort occurred less than 24 hours from the time of discharge; therefore, complications observed in the SDD cohort would not have been identified had the patients been observed during an overnight stay. Additionally, there may be some positive impact on local healthcare economics. Specifically, our study found that the SDD of a patient following a cryoballoon ablation for treatment of AF is associated with cost savings to the hospital that increase with the percent of patients discharged the same day.