To the Editor Kawasaki disease (KD) is an acute, medium-size childhood vasculitis that principally affects coronary arteries (CA).1 The American Heart Association identified different risk levels,1 thus recommending different cardiology assessment, according to a risk stratification based on CA luminal dimensions converted to z scores, incorporating both maximal and last CA involvement and the presence of additional features as total number of aneurysms and luminal irregularities.1 Accordingly, children with normal CA (z score <2) during and at the first 6 weeks from disease onset may be discharged from follow-up.1
Maccora I, Calabri GB, Simonini G. Is Echocardiography Critical in Patients With Kawasaki Disease With a z Score Less Than 2 to 6 Weeks From Onset? JAMA Pediatr. 2019;173(7):700. doi:10.1001/jamapediatrics.2019.1219
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