LAUSR

Thank you very much for your comments, with which we agree. The National Inpatient Sample is a limited database that captures only the events of each admission, coded using International Classification of Diseases, 9th and 10th revisions. Consequently, the use of chemotherapy and postsurgical complications are unable to be accurately determined. This information would be relevant, in combination with tumor pathology, to better delineate best practices. Furthermore, this limited dataset cannot determine the particular factors affecting the relationship between atrial fibrillation and surgery. Previous studies have shown that atrial fibrillation may be associated with particular tumor types. As noted in the manuscript, primary cardiac tumors characteristics may benefit from analysis in other datasets. Longitudinal studies will also be of benefit to the treatment of primary cardiac tumors.