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The efficacy and safety of antithrombotic therapy in patients with positive antiphospholipid antibodies receiving invasive procedures: experience from a single tertiary center

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ObjectivesTo evaluate the efficacy and safety of antithrombotic prophylaxis and to explore potential risk factors for thrombotic/bleeding events in patients with positive antiphospholipid (aPL) antibodies receiving invasive procedures.MethodAll aPL-positive patients… Click to show full abstract

ObjectivesTo evaluate the efficacy and safety of antithrombotic prophylaxis and to explore potential risk factors for thrombotic/bleeding events in patients with positive antiphospholipid (aPL) antibodies receiving invasive procedures.MethodAll aPL-positive patients who underwent invasive procedures in Peking Union Medical College Hospital, from January 2002 to April 2018, were retrospectively enrolled. Demographic features, clinical features, antiphospholipid antibody profiles, types of invasive procedures, and antithrombotic management, as well as complications and outcomes, were systematically reviewed and recorded.ResultsA total of 111 aPL-positive patients with 130 invasive procedures were enrolled. One hundred nine (83.8%) cases were on regular antithrombotic therapy which started at least 1 month prior to the invasive procedures, with 58 (44.6%) receiving anticoagulation therapy, 27 (20.8%) receiving antiplatelet therapy, and 24 (18.5%) receiving both. During the periprocedural period, the median time free of antithrombotic therapy was 2.5 days (interquartile range 1.5–6.0 days). Two (1.5%) periprocedural thrombotic events and 18 (13.8%) bleeding events were identified. Large open/laparoscopic surgeries of the thorax and abdomen were associated with a higher risk of bleeding (OR 3.46, 95% CI 1.24–9.67, p = 0.014). All bleeding events were manageable and not life-threatening.ConclusionsAggressive antithrombotic therapy was associated with fewer thrombotic events in aPL-positive patients receiving invasive procedures, but might contribute to an increased bleeding rate, especially in large open surgeries. This study justifies more caution in prophylactic antithrombotic therapy in periprocedural aPL-positive patients.

Keywords: efficacy safety; receiving invasive; invasive procedures; therapy; antithrombotic therapy; safety antithrombotic

Journal Title: Clinical Rheumatology
Year Published: 2019

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