Low-Molecular-Weight Heparin vs Warfarin for Thromboprophylaxis in Children With Coronary Artery Aneurysms After Kawasaki Disease: A Pragmatic Registry Trial

Background The substantial risk of thrombosis in large coronary artery aneurysms (CAAs) (maximum z-score ≥ 10) after Kawasaki disease (KD) mandates effective thromboprophylaxis. We sought to determine the effectiveness of anticoagulation (low-molecular-weight heparin [LMWH] or warfarin) for thromboprophylaxis in large CAAs. Methods Data from 383 patients enrolled in the International KD Registry (IKDR) were used. Time-to-event analysis was used...