The Impact of Prior Antithrombotic use on Thromboembolic Events in Patients with Cardiovascular Disease and Severe COVID-19 Infection.

To establish the impact of previous use of antithrombotic drugs, Kaplan Meier survival analysis was performed, showing a highly significant difference (Log-Rank test P = .014) between the use or not of antithrombotic drugs on protection against thromboembolic events during hospitalization ( Figure 2 ), but with no difference in mortality between the two groups (Log-rank test 0.461) ( Figure 3 ) and this, during the hospitalization period.

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