Table 1.

American Heart Association risk stratification for Kawasaki disease.

Risk level	Recommendation
I (No coronary artery changes at any stage of illness)	Consider noninvasive testing every 3–4 years. No Medical therapy
II (Transient coronary artery ectasia disappears within first 6–8 weeks)
III (One small to medium coronary artery aneurysm)	Without Symptoms	With Symptoms
IV (More than 1 large or giant coronary artery aneurysm or multiple aneurysms in the same coronary artery without stenosis)	Evaluate every 4–6 months with noninvasive testing and angiography every 2–3 years. Treat with low dose aspirin	Evaluate every 3–4 months with noninvasive testing and angiography as needed. Treat with low dose aspirin; other medications as dictated by the cardiovascular status
V (Coronary artery obstruction)

• Adapted from Newburger JW et al.¹¹