Stenotic Lesions and the Maximum Diameter of Coronary Artery Aneurysms in Kawasaki Disease

The cutoff points of the coronary artery diameter within the first 100 days after the onset of Kawasaki disease leading to a stenotic lesion in the late period, were a diameter of ≥6.1 mm with a BSA of <0.50 m2 and a diameter of ≥8.0 mm with a BSA of ≥0.50 m2. Those cutoff points would have corresponded with a Z score of at least 10 on 2-dimensional echocardiography. Careful follow-up and antithrombotic therapy should be provided to patients who meet these criteria.