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SIR 2026

Traditional Poster

General IR

Quality Improvement

Session: Traditional Poster Presentations

549 - Racial Subgroup Analysis in Endovascular Intervention and In-Hospital Mortality Outcomes Among Patients with Acute Pulmonary Embolism

Monday, April 13, 2026
12:10 PM - 1:10 PM ET
Purpose: We aimed to determine if the race of patients treated for acute pulmonary embolism (PE) was associated with differential rates of intervention and in-hospital clinical outcomes.

Materials and Methods: This retrospective, single-center study included 538 intermediate-high and high-risk PE patients who received PERT consultation during a 4-year period from 2021-2025. Racial and demographic and hospital course information were obtained from the electronic medical record. For analysis, only black and white patients were included because the numbers of Asian (n =1) and Indigenous American (n=1) patients were too small to allow meaningful statistical comparison. Outcomes included PE-associated mortality, discharge location, and need for oxygen at discharge. Hospital course variables include cardiac arrests, bleeds, transfusions, and length of total and ICU stay. Further subgroup analysis of intervention patients was completed. Intervention included both mechanical thrombectomy and catheter-directed thrombolysis.

Results: The study population included 303 (56.32%) white patients and 235 (43.68%) black patients. 63 (11.71%) and 37 (6.88%) white and black patients received intervention, respectively. Race was an independent predictor of mortality, with black patients showing higher odds of mortality after adjustment for demographic variables, clinical history, risk stratification, and time to PERT activation/anticoagulation (OR:1.87, 95% CI [1.06-3.35], p=0.03). Intervention appeared to be significantly associated with lower mortality risk in black patients and not white patients (OR:0.11, 95% CI [0.01-0.66], p= 0.03) However, the difference in effect between subgroups did not reach statistical significance (p=0.07). No differences in time to PERT activation or to initial anticoagulation were observed; however, black patients were significantly less likely to receive intervention compared to white patients after adjusting for comorbidities and PE severity at presentation (OR: 0.58, 95% CI [0.34-0.95], p=0.03). Although there were no differences observed in hospital course, discharge information, and complications within 30 days, black patients had higher in-hospital mortality rates specifically related to PE (p=0.03).

Conclusion: Our study demonstrated that black PE patients are more likely to suffer in-hospital mortality and less likely to receive intervention when compared to white PE patients.