Abstract
Background
High-dose aspirin (HDA) is used with intravenous immunoglobulin (IVIg) in Kawasaki disease (KD). Practice regarding HDA varies, and it is unclear whether HDA duration affects the long-term course.
Methods
We retrospectively studied KD patients at our hospital for over 10 years. Patients were categorized as having received HDA for 0, 1–7, or >7 days. Primary outcome was the maximum coronary Z-score at diagnosis and follow-up; secondary outcomes included inflammatory markers.
Results
One hundred and three patients had HDA duration documented, of which 35 patients had coronary artery abnormalities (CAAs) at diagnosis. There was no difference in demographics or inflammatory markers between the HDA groups, and no difference in HDA duration between patients with or without CAAs. Seventeen patients received no HDA; they had longer illness and defervescence duration before diagnosis, and were less likely to receive IVIg. For CAAs, multivariate regression revealed that HDA duration did not predict the coronary Z-score at 9–15 months. Higher Z-score at diagnosis was associated with higher Z-score at 9–15 months.
Conclusion
The only factor associated with coronary Z-score at 9–15 months was the Z-score at diagnosis. At our institution, longer illness and defervescence duration and the lack of IVIg administration were associated with not administering HDA. HDA duration did not affect the clinically relevant outcomes, particularly CAA persistence.
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We acknowledge Michael Muradian for assisting with initial data collection.
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Research reported in this publication was supported by the National Center for Advancing Translational Sciences of the National Institutes of Health Award Number UL1TR000114.
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Migally, K., Braunlin, E., Zhang, L. et al. Duration of high-dose aspirin therapy does not affect long-term coronary artery outcomes in Kawasaki disease. Pediatr Res 83, 1136–1145 (2018). https://doi.org/10.1038/pr.2018.44
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DOI: https://doi.org/10.1038/pr.2018.44
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