All in-hospital endpoints have been collected in the pre-existing Catheterization Laboratory Database. Patient's data will be extracted from this database as indicated in the procedure below. Each patient will be reviewed for clinical follow-up and the presence of adverse events including but not limited to hematoma, thrombosis, blood loss, vascular imaging, the need for additional procedures, and re-admissions within 30 days of closure. If necessary, further data will be collected via a phone interview with the patients. Univariate and multivariate analysis will be performed to determine the factors that predict inadequate or incomplete closure or the development of complications mentioned in the section above. A predictive model based on the identified risk factor will be developed and tested prospectively in the next phase of this ongoing investigation.