Abstract: Objective To compare the echocardiographic absolute value method with two Z socres(Kobayashi and Dallaire) calculation methods in evaluating the results of coronary artery lesions(CAL) in infants below 6 months with Kawasaki disease(KD). Methods The infants below 6 months with KD who were hospitalized in the Department of Cardiology, Xuzhou Children's Hospital，Xuzhou Medical University from January 2019 to December 2020 were selected. The internal diameters of major coronary artery segments were measured by echocardiography, and the CAL detection rates by absolute value method, Kobayashi(KZ method) and Dallaire(DZ method) were compared. Two Z socres of major coronary artery segments were analyzed for consistency. Results There were 72 cases(84.7%) of CAL according to KZ, 63 cases(74.1%) according to DZ method, which was 0.95 times and 0.70 times higher than 37 cases（43.5%） according to absolute value method, respectively(P＜0.001). The two Z socres of girls' RCA and boys' LAD were relatively poor in consistency. Conclusion In evaluating coronary artery of infants below 6 months with KD, the degree of CAL judgment by BSA-corrected Z score method is much greater than that by absolute value method.

Key words:

Kawasaki disease, Coronary artery lesions, Echocardiography, Infants below 6 months, Z score, Consistency