Abstract Objective To investigate renal artery injury caused by Kawasaki disease (KD). Methods Forty-three children with KD were enrolled in the study. According to the blood pressure in the acute stage, these children were classified into normal blood pressure subgroup and increased blood pressure subgroup. Eighteen children with fever caused by acute upper respiratory tract infection were enrolled as the control group. The diameter of the origin of the main renal artery, hemodynamic parameters of the main renal artery and the renal interlobar artery, rennin activity, and levels of angiotensin II and aldosterone were compared between groups. Results During the acute stage of KD, both subgroups had a significantly smaller diameter of the origin of the main renal artery, a significantly higher resistance index (RI) of the main renal artery, and a significantly lower end-diastolic velocity (EDV) than the control group (PPPConclusions KD may cause renal artery injury and early hemodynamic changes, resulting in a transient increase in blood pressure in some patients.
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