Use and Outcomes of Secondary Anticoagulation in Patients <21 Years Old Following Completion of a Primary Course of Anticoagulation for Treatment of Acute Provoked VTE: Findings from the Multinational Kids-DOTT Trial

Background: Although the rate of venous thromboembolism (VTE) recurrence is low among pediatric patients with provoked VTE, children with a history of VTE who have persistent prothrombotic risk factors such as central venous catheters (CVCs), thrombophilia and cancer have been shown to have increased risk for recurrent VTE (e.g., Brandao et al., Lancet Hematology 2020). Prospective multicenter data on the use of secondary anticoagulation in patients with a first provoked VTE are limited. Objective: We sought to characterize the use and outcomes of secondary anticoagulation in patients