• Sebastian E Beyer, Colby Shanafelt, Duane S Pinto, Jeffrey L Weinstein, Herbert D Aronow, Ido Weinberg, Robert W Yeh, Eric A Secemsky, and Brett J Carroll.
• Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
• Chest. 2020 Mar 1; 157 (3): 645-653.

BackgroundThere are increased options to deliver thrombolytic treatment for acute, high-risk pulmonary embolism (PE). The goals of this study were to examine practice patterns of systemic thrombolysis and catheter-directed thrombolysis (CDT) and to compare outcomes following CDT with ultrasound facilitation (CDT-ultrasound) and CDT alone.MethodsThe study analyzed adults aged > 18 years with hospitalizations associated with acute PE and thrombolysis in the 2016 Nationwide Readmissions Database. The study identified characteristics associated with the use of systemic thrombolysis and CDT. Comparisons of CDT-ultrasound vs CDT alone were then made by evaluating in-hospital events and readmissions. The primary outcomes were in-hospital mortality and 30-day readmission rates.ResultsAmong 5,436 hospitalizations, systemic thrombolysis was used more often (n = 3,376; 62.1%) than CDT (n = 2,060; 37.9%). Compared with CDT, systemic thrombolysis was used more frequently in patients with higher rates of vasopressor use (4.3% vs 1.0%), shock (15.8% vs. 6.9%), cardiac arrest (12.7% vs 3.4%), and mechanical ventilation (19.0% vs 5.9%). Among patients who underwent CDT, 417 (20.2%) received CDT-ultrasound, and 1,643 (79.8%) received CDT alone. Rates of bleeding events, vasopressor use, and mechanical ventilation were similar between therapeutic strategies. Following adjustment, in-hospital mortality (OR, 1.19; 95% CI, 0.63-2.26; P = .59) and 30-day readmission rates (OR, 0.75; 95% CI, 0.47-1.22; P = .25) were not significantly different between CDT-ultrasound and CDT alone.ConclusionsSystemic thrombolysis is used more often than CDT in patients with acute PE, in particular among those with a greater prevalence of high-risk features. Among patients treated with CDT, there were no differences in events between CDT-ultrasound and CDT alone.Copyright © 2019 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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