Abstract
The present guidelines stratify endoscopic ultrasound-guided tissue acquisition (EUS-TA) as a high-bleeding risk procedure in patients on antithrombotics. However, the data regarding the same are conflicting. Therefore, this meta-analysis aimed to analyze the bleeding event rates associated with EUS-TA in patients receiving antithrombotic therapy. A literature search from January 2000 to August 2022 was done for studies on EUS-guided TA in patients receiving antithrombotics. The primary outcome was incidence of overall and major bleeding. Pooled event rates across studies were expressed with summative statistics. A total of 12 studies were included in the meta-analysis. The pooled risk of overall bleeding and major bleeding in patients on antithrombotics was 2.0% (0.6-3.4) and 0.8% (0.0-1.6), respectively. In patients taking thienopyridine or anticoagulants, the pooled risk of overall bleeding and major bleeding was 2.4% (0.9-3.9) and 1.7% (0.4-3.1), respectively. Patients on antithrombotics had a higher odd of overall bleeding (OR 2.12, 1.20-3.83) and major bleeding (OR 3.58, 1.11-11.52) compared to controls. The odds of overall bleeding (OR 0.95, 95%CI 0.38-2.42) and major bleeding (OR 1.57, 95%CI 0.45-5.54) were comparable between patients on antithrombotics who continued and those who discontinued it preprocedural. Despite an increase risk of bleeding with EUS-TA in patients on antithrombotics, the pooled incidence remains low. Compared to the previous guidelines stating thienopyridine use as high risk for bleeding, the present analysis showed a bleeding rate of less than 1%. Discontinuing antithrombotics prior to EUS-TA does not reduce the bleeding risk significantly, requiring strict monitoring.
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