Limitations
Before considering the broad applicability of the results of our study, certain important limitations should be noted. These include: the retrospective non-randomized nature of the study; the study was performed at high-volume ablation centers; and the possibility that there was under-reporting of minor self-limiting complications such as small groin hematoma in the SDD group. Follow-up transthoracic echocardiogram which may missed asymptomatic pericardial effusions were not performed. The study was solely based on cryoballoon ablation techniques for AF and may not be applicable to other modalities of ablation. Lastly, the selection of patients deemed appropriate to be discharged by the operators was based on their skills, comfort level, and hospital-specific discharge standards, therefore these results should be cautiously generalized.