To the Editor: Kawasaki disease in the acute phase causes cardiac issues including coronary artery lesions (CALs) and valve dysfunction [1]. Kawasaki disease is generally caused by pancarditis and acute hypercytokinemia [1, 2]. The occurrence of valve insufficiency that required medical treatment is relatively lower than that of CALs recognized as the one of major cardiac complications of Kawasaki disease [1]. Higher moderate aortic regurgitation after Kawasaki disease like that in the present case is rare, and only six surgical cases have been reported to date [3,4,5], whereas mitral valves are more frequently affected and most mitral regurgitation improves after alleviating the inflammation.

A 7-mo-old patient had high fever for 7 d. After 1 mo, she was suspected with Kawasaki disease due to prolonged fever, with the occurrence of polymorphic rash and mucosal change. The diastolic and systolic murmur was noted in the precordial region. A transthoracic echocardiogram (TTE) revealed noncoronary cusp perforation of the aortic valve and severe aortic regurgitation without vegetation. The diameters of left main trunk of the left coronary artery and the proximal right coronary artery were 2.6 mm (z = +3.7) and 3.0 mm (z = +6.6), respectively. After a 2-wk medication, she had no fever without remarkable findings of Kawasaki disease. However, she still showed tachypnea and lethargy. Then, aortic valvuloplasty was planned with Ozaki procedure and Konno surgery in case of severe aortic regurgitation after the repair.

The cardiopulmonary bypass (CPB) was initiated with bicaval drainage and aortic cannulation. After cross-clamping the ascending aorta, the aortotomy was made. The perforation of 2 × 3 mm in size was detected near the annulus of noncoronary cusp. Double interrupted pledgeted stitches using autologous pericardium strips were made to close the leaflet hole. The TEE showed mild aortic regurgitation after CPB weaning. The postoperative course was free of neurological or respiratory dysfunction. The patient was discharged on the 37th postoperative day.

Aortic valvuloplasty was successfully performed to repair the aortic cusp perforation after the acute phase of Kawasaki disease. Persistent aortic regurgitation should be carefully followed in the long-term as aortic regurgitation potentially deteriorates.