Mechanical thrombectomy for pulmonary embolism was associated with higher rates of ISTH major bleeding compared to ultrasound-assisted catheter-directed thrombolysis (17.3% vs 12.4%; P=0.002).
Observational (n=2,259)
Yes
Does mechanical thrombectomy compared to ultrasound-assisted catheter-directed thrombolysis increase major bleeding in patients with pulmonary embolism?
In a real-world analysis of patients with pulmonary embolism, mechanical thrombectomy was associated with a higher risk of major bleeding and intracranial hemorrhage compared to ultrasound-assisted catheter-directed thrombolysis.
Absolute Event Rate: 17.3% vs 12.4%
p-value: p=.002
BackgroundAdvanced therapies are increasingly utilized to treat pulmonary embolism (PE). A unique data platform allows access to electronic health record data for comparison of the safety of PE therapies.MethodsAll data from Truveta (Truveta, Inc) were analyzed (16 systems, 83,612,413 patients, 535,567 with PE). All patients treated with ultrasound-assisted catheter-directed thrombolysis (USCDT) (Boston Scientific) or mechanical thrombectomy (MT) (Inari Medical) for PE were identified. The primary analysis was based on index procedures performed from January 2009 to May 2023, and contemporary analysis on those performed from January 2018 to May 2023. Bleeding was assessed via direct laboratory analysis and transfusion administration documentation. International Society for Thrombosis and Hemostasis (ISTH) and Bleeding Academic Research Consortium (BARC) 3b definitions were recreated. Multiple logistic regression analysis of major bleeding was performed. In-hospital death and median length of stay were measured.ResultsFor the primary analysis, 2259 patients (N = 1577 USCDT, N = 682 MT) and for the contemporary analysis 1798 patients (N = 1137 USCDT, N = 661 MT) met the criteria. Incidence of hemoglobin reduction (>2 and >5 g/dL) and transfusions received were significantly higher among MT-treated patients in both analyses, as was ISTH and BARC 3b major bleeding (primary: ISTH MT 17.3% vs USCDT 12.4% P = .002; BARC 3b MT 15.4% vs USCDT 11.8% P = .019) (contemporary: ISTH MT 17.2% vs USCDT 11.0% P = .0002; BARC 3b MT 15.4% vs USCDT 10.6% P = .002). Regression analysis demonstrated that MT is associated with major bleeding. Median length of stay, all-cause 30-day readmission and in-hospital mortality were similar between groups. Intracranial hemorrhage was more common with MT.ConclusionsMajor bleeding derived from direct laboratory and transfusion data occurred more frequently with MT vs USCDT. Intracranial hemorrhage was more common among MT-treated patients. In the absence of randomized data, these results provide guidance regarding the bleeding risk and safety of strategies for advanced PE therapy.
Monteleone et al. (Tue,) conducted a observational in Pulmonary embolism (n=2,259). Mechanical thrombectomy (MT) vs. Ultrasound-assisted catheter-directed thrombolysis (USCDT) was evaluated on ISTH major bleeding (p=.002). Mechanical thrombectomy for pulmonary embolism was associated with higher rates of ISTH major bleeding compared to ultrasound-assisted catheter-directed thrombolysis (17.3% vs 12.4%; P=0.002).