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Real-world clinical outcomes among US Veterans with oral factor xa inhibitor–related major bleeding treated with andexanet alfa or 4-factor prothrombin complex concentrate
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Real-world clinical outcomes among US Veterans with oral factor xa inhibitor–related major bleeding treated with andexanet alfa or 4-factor prothrombin complex concentrate
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Real-world clinical outcomes among US Veterans with oral factor xa inhibitor–related major bleeding treated with andexanet alfa or 4-factor prothrombin complex concentrate
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Journal Article
Real-world clinical outcomes among US Veterans with oral factor xa inhibitor–related major bleeding treated with andexanet alfa or 4-factor prothrombin complex concentrate
2023
Overview
Oral factor Xa (FXa) inhibitors significantly reduce incidence of stroke and thromboembolic events in patients with atrial fibrillation or venous thromboembolism. Due to various factors and the lack of a randomized controlled trial comparing andexanet alfa to usual care, non-specific replacement agents including 4 F-PCC are still used off-label for FXa inhibitor bleed management. Clinical and mortality data were extracted from the inpatient medical data and Veteran Affairs (VA) vital status files over the time of March 2014 through December 2020. Propensity score-weighted models were used for this retrospective cohort study using data from the Veterans Affairs Informatics and Computing Infrastructure (VINCI). The study included 255 patients (85-andexanet alfa and 170-4 F-PCC) exposed to an oral factor Xa inhibitor and hospitalized with an acute major, gastrointestinal (GI), intracranial (ICH) or other bleed. In-hospital mortality was significantly lower in the andexanet alfa cohort compared to the 4 F-PCC cohort (10.6% vs. 25.3%, p = 0.01). Propensity score–weighted Cox models reveal a 69% lower hazard of in-hospital mortality for those treated with andexanet alfa (HR 0.31, 95% CI 0.14–0.71) compared to those treated with 4 F-PCC. Additionally, those treated with andexanet alfa had a lower 30-day mortality rate and lower 30-day hazard of mortality in the weighted Cox model (20.0% vs. 32.4%, p = 0.039; HR 0.54, 95% CI 0.30–0.98) compared to those treated with 4 F-PCC. Among 255 US veterans with major bleeding in the presence of an oral factor Xa inhibitor, treatment with andexanet alfa was associated with lower in-hospital and 30-day mortality than treatment with 4 F-PCC.
Publisher
Springer Nature B.V
Subject
