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Systemic thrombolysis (ST) and catheter-directed intervention (CDI) are both used in the treatment of acute pulmonary embolism (PE), but the comparative outcomes of these two therapies remain unclear. The objective of this study was to compare short-term mortality and safety outcomes between the two treatments using a large national database.

Patients presenting with acute PE were identified in the National Inpatient Sample (NIS) from 2009 to 2012. Comorbidities, clinical characteristics, and invasive procedures were identified using International Classification of Diseases, Ninth Revision (ICD) codes and the Elixhauser comorbidity index. To adjust for anticipated baseline differences between the two treatment groups, propensity score matching was used to create a matched ST cohort with clinical and comorbid characteristics similar to those of the CDI cohort. Subgroups of patients with …