{Reference Type}: Journal Article {Title}: Predictors of bleeding and thrombotic events among patients admitted to the hospital with COVID-19 and elevated D-dimer: insights from the ACTION randomized clinical trial. {Author}: de Barros E Silva PGM;Furtado RHM;de Alcântara Chaud MS;Macedo AVS;Bronhara B;Damiani LP;Barbosa LM;Suiama MA;Ramacciotti E;de Aquino Martins P;de Oliveira AL;Nunes VS;Ritt LEF;Rocha AT;Tramujas L;Santos SV;Diaz DRA;Viana LS;Melro LMG;Figueiredo EL;Neuenschwander FC;Dracoulakis MDA;Lima RGSD;de Souza Dantas VC;Fernandes ACS;Gebara OCE;Hernandes ME;Queiroz DAR;Veiga VC;Canesin MF;de Faria LM;Feitosa-Filho GS;Gazzana MB;Liporace IL;de Oliveira Twardowsky A;Maia LN;Machado FR;de Matos Soeiro A;Conceição-Souza GE;Armaganijan L;Guimarães PO;Rosa RG;Azevedo LCP;Alexander JH;Avezum A;Berwanger O;Cavalcanti AB;Lopes RD; ; {Journal}: J Thromb Thrombolysis {Volume}: 57 {Issue}: 6 {Year}: 2024 Aug 18 {Factor}: 5.221 {DOI}: 10.1007/s11239-024-02995-y {Abstract}: Therapeutic anticoagulation showed inconsistent results in hospitalized patients with COVID-19 and selection of the best patients to use this strategy still a challenge balancing the risk of thrombotic and hemorrhagic outcomes. The present post-hoc analysis of the ACTION trial evaluated the variables independently associated with both bleeding events (major bleeding or clinically relevant non-major bleeding) and the composite outcomes thrombotic events (venous thromboembolism, myocardial infarction, stroke, systemic embolism, or major adverse limb events). Variables were assessed one by one with independent logistic regressions and final models were chosen based on Akaike information criteria. The model for bleeding events showed an area under the curve of 0.63 (95% confidence interval [CI] 0.53 to 0.73), while the model for thrombotic events had an area under the curve of 0.72 (95% CI 0.65 to 0.79). Non-invasive respiratory support was associated with thrombotic but not bleeding events, while invasive ventilation was associated with both outcomes (Odds Ratio of 7.03 [95 CI% 1.95 to 25.18] for thrombotic and 3.14 [95% CI 1.11 to 8.84] for bleeding events). Beyond respiratory support, creatinine level (Odds Ratio [OR] 1.01 95% CI 1.00 to 1.02 for every 1.0 mg/dL) and history of coronary disease (OR 3.67; 95% CI 1.32 to 10.29) were also independently associated to the risk of thrombotic events. Non-invasive respiratory support, history of coronary disease, and creatinine level may help to identify hospitalized COVID-19 patients at higher risk of thrombotic complications.ClinicalTrials.gov: NCT04394377.